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Walker 40295 Exhaust Y Pipe
| Brand | Walker 40295 |
|---|---|
| Bend Type | Compression |
| Finish | Aluminized |
| Grade Type | Regular |
| Inlet Type | 3 Bolt Loose Flange With Spherical Flare |
| Length | 22.5 |
| Material | Steel |
| Mounting Hardware Included | no |
| Outlet Outside Diameter | 3 |
| Outlet Type | Pipe Connection |
| Pipe Wall Thickness | 0.05 |
| Universal Or Specific Fit | Specific |
| Fits | Chevrolet and GMC · 500 vehicles |
Specific fit. Precision-checked for a precise fit and quick, easy installation.
Aluminized steel. Built for durability with a corrosion-resistant finish.
Exhaust Y pipe. Engineered as a direct exhaust connection with a pipe outlet.
Cross-references 93972 for the same application. See all 1.
Walker 40295 Exhaust Y Pipe Overview
Walker 40295 is a specific-fit exhaust Y pipe for select Chevrolet and GMC trucks and SUVs from 1988-1994. Built from aluminized steel with a compression bend design, it is made for direct replacement service where the original Y pipe has corroded, cracked, or lost proper exhaust flow.
Key Features
- Aluminized steel construction for corrosion resistance and durability
- Specific-fit design for direct replacement on listed applications
- 3-bolt loose flange with spherical flare inlet type
- 3-inch outlet outside diameter
- 22.5-inch overall length
- Precision-formed with fixture checking for fit consistency
- Walker part number 40295 for easy identification
Detailed Description
This Walker exhaust Y pipe is engineered for vehicles that use a dual-inlet, single-outlet exhaust routing layout. The aluminized finish helps resist rust in demanding underbody conditions, while the steel construction and 0.05-inch pipe wall thickness provide the structure needed for long-term exhaust service. Walker 40295 is a direct replacement choice for Chevrolet C1500, C2500, C3500, K1500, K2500, K3500, Blazer, and GMC C1500, C2500, C3500, K1500, K2500, K3500, and Yukon applications listed below.
This part cross-references part number 93972 for the same application.
What This Part Helps Address
- Exhaust leaks at a damaged or rusted Y pipe
- Restricted exhaust flow from a deteriorated factory pipe
- Broken flange connections at the exhaust junction
- Fitment issues when replacing a worn OE-style exhaust routing section
- Noise from cracks, pinholes, or separation in the exhaust pipe
Installation Notes and Fitment
- Fits 1992-1994 Chevrolet Blazer, N/A, without Welded Converter
- Fits 1991-1994 Chevrolet K2500, N/A, Over 8500 lb GVW; with 3 in Muffler Inlet; Requires 41970 At Left Hand Outlet
- Fits 1992-1994 GMC Yukon, N/A, with Single Catalytic Converter
- Fits 1988-1993 Chevrolet C1500, N/A, with 2.5 in Muffler Inlet
- Fits 1988-1993 Chevrolet C1500, N/A, with 3 in Muffler Inlet; without Welded Converter
- Fits 1988-1993 Chevrolet C2500, N/A, Below 8500 lb GVW; with 2.5 in Muffler Inlet
- Fits 1988-1993 Chevrolet C2500, N/A, Below 8500 lb GVW; with 3 in Muffler Inlet
- Fits 1991-1993 Chevrolet C2500, N/A, Over 8500 lb GVW; with 3 in Muffler Inlet; Requires 41970 At Left Hand Outlet
- Fits 1991-1993 Chevrolet C3500, N/A, with 2.5 in Muffler Inlet; Requires 41970 At Left Hand Outlet
- Fits 1991-1993 Chevrolet C3500, N/A, with 3 in Muffler Inlet; Requires 41970
- Fits 1990-1993 Chevrolet C3500, N/A, Below 15000 lb GVW; with Catalytic Converter; Requires 41970 At Left Hand Outlet
- Fits 1988-1993 Chevrolet K1500, N/A, with 2.5 in Muffler Inlet
- Fits 1988-1993 Chevrolet K1500, N/A, with 3 in Muffler Inlet; without Welded Converter
- Fits 1988-1993 Chevrolet K2500, N/A, Below 8500 lb GVW; with 2.5 in Muffler Inlet
- Fits 1988-1993 Chevrolet K2500, N/A, Below 8500 lb GVW; with 3 in Muffler Inlet
- Fits 1991-1993 Chevrolet K2500, N/A, Over 8500 lb GVW; with 3 in Muffler Inlet; Requires 41970 At Left Hand Outlet
- Fits 1991-1993 Chevrolet K3500, N/A, with 2.5 in Muffler Inlet; Requires 41970 At Left Hand Outlet
- Fits 1991-1993 Chevrolet K3500, N/A, with 3 in Muffler Inlet; with Single Catalytic Converter; Requires 41970 At Left Hand Outlet
- Fits 1990-1993 Chevrolet K3500, N/A, Below 15000 lb GVW; with Catalytic Converter; Requires 41970 At Left Hand Outlet
- Fits 1988-1993 GMC C1500, N/A, with 2.5 in Muffler Inlet
- Fits 1988-1993 GMC C1500, N/A, with 3 in Muffler Inlet; without Welded Converter
- Fits 1988-1993 GMC C2500, N/A, Below 8500 lb GVW; with 2.5 in Muffler Inlet
- Fits 1988-1993 GMC C2500, N/A, Below 8500 lb GVW; with 3 in Muffler Inlet
- Fits 1991-1993 GMC C2500, N/A, Over 8500 lb GVW; with 3 in Muffler Inlet; Requires 41970 At Left Hand Outlet
- Fits 1991-1993 GMC C3500, N/A, with 2.5 in Muffler Inlet; Requires 41970 At Left Hand Outlet
- Fits 1991-1993 GMC C3500, N/A, with 3 in Muffler Inlet; Requires 41970
- Fits 1990-1993 GMC C3500, N/A, Below 15000 lb GVW; with Catalytic Converter; Requires 41970 At Left Hand Outlet
- Fits 1988-1993 GMC K1500, N/A, with 2.5 in Muffler Inlet
- Fits 1988-1993 GMC K1500, N/A, with 3 in Muffler Inlet; without Welded Converter
- Fits 1988-1993 GMC K2500, N/A, Below 8500 lb GVW; with 2.5 in Muffler Inlet
- Fits 1988-1993 GMC K2500, N/A, Below 8500 lb GVW; with 3 in Muffler Inlet
- Fits 1991-1993 GMC K2500, N/A, Over 8500 lb GVW; with 2.5 in Muffler Inlet; Requires 41970 At Left Hand Outlet
- Fits 1991-1993 GMC K2500, N/A, Over 8500 lb GVW; with 3 in Muffler Inlet; Requires 41970 At Left Hand Outlet
- Fits 1991-1993 GMC K3500, N/A, with 3 in Muffler Inlet; with Single Catalytic Converter; Requires 41970 At Left Hand Outlet
- Fits 1990-1993 GMC K3500, N/A, Below 15000 lb GVW; with Catalytic Converter; Requires 41970 At Left Hand Outlet
- Fits 1988-1990 Chevrolet C2500, N/A, Over 8500 lb GVW; with 2.5 in Muffler Inlet; with 8,500 lb Gross Vehicle Weight (GVW)
- Fits 1990 Chevrolet C2500, N/A, Over 8500 lb GVW; with 3 in Muffler Inlet
- Fits 1990 Chevrolet C3500, N/A, with 3 in Muffler Inlet
- Fits 1988-1990 Chevrolet C3500, N/A, with 2.5 in Muffler Inlet
- Fits 1990 Chevrolet K2500, N/A, Over 8500 lb GVW; with 3 in Muffler Inlet
- Fits 1988-1990 Chevrolet K2500, N/A, Over 8500 lb GVW; with 2.5 in Muffler Inlet; with 8,500 lb Gross Vehicle Weight (GVW)
- Fits 1988-1990 Chevrolet K3500, N/A, with 3 in Muffler Inlet; with Single Catalytic Converter
- Fits 1988-1990 Chevrolet K3500, N/A, with 2.5 in Muffler Inlet
- Fits 1988-1990 GMC C2500, N/A, Over 8500 lb GVW; with 2.5 in Muffler Inlet; with 8,500 lb Gross Vehicle Weight (GVW)
- Fits 1990 GMC C2500, N/A, Over 8500 lb GVW; with 3 in Muffler Inlet
- Fits 1988-1990 GMC C3500, N/A, with 2.5 in Muffler Inlet
- Fits 1990 GMC C3500, N/A, with 3 in Muffler Inlet
- Fits 1988-1990 GMC K2500, N/A, Over 8500 lb GVW; with 2.5 in Muffler Inlet; with 8,500 lb Gross Vehicle Weight (GVW)
- Fits 1990 GMC K2500, N/A, Over 8500 lb GVW; with 3 in Muffler Inlet
- Fits 1988-1990 GMC K3500, N/A, with 2.5 in Muffler Inlet
- Fits 1988-1990 GMC K3500, N/A, with 3 in Muffler Inlet; with Single Catalytic Converter
- Fits 1988-1989 Chevrolet C3500, N/A, with Dual Catalytic Converters
- Fits 1988-1989 Chevrolet K3500, N/A, with Dual Catalytic Converters
- Fits 1988-1989 GMC C3500, N/A, with Dual Catalytic Converters
- Fits 1988-1989 GMC K3500, N/A, with Dual Catalytic Converters
Quality Assurance
Walker manufactures this pipe with precision benders and fixture checking to help maintain consistent fitment across the listed Chevrolet and GMC applications. The part is built for direct replacement service where exact exhaust routing and flange alignment matter.
| Year | Make | Model | Body Type | Drive Type | Liters | Cylinders | Wheel Base | Position | Notes |
|---|---|---|---|---|---|---|---|---|---|
| 1994 | Chevrolet | Blazer | — | 4WD | 5.7L | V8 | — | N/A | without Welded Converter |
| 1994 | Chevrolet | K2500 | — | — | 4.3L | V6 | 155.5" | N/A | Over 8500 (lb) GVW; with 3 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet |
| 1994 | Chevrolet | K2500 | — | — | 4.3L | V6 | 131.5" | N/A | Over 8500 (lb) GVW; with 3 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet |
| 1994 | GMC | Yukon | — | 4WD | 5.7L | V8 | — | N/A | with Single Catalytic Converter |
| 1993 | Chevrolet | Blazer | — | 4WD | 5.7L | V8 | — | N/A | without Welded Converter |
| 1993 | Chevrolet | C1500 | — | — | 5.7L | V8 | 131.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1993 | Chevrolet | C1500 | — | — | 5.7L | V8 | 117.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1993 | Chevrolet | C1500 | — | — | 5.7L | V8 | 155.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1993 | Chevrolet | C1500 | — | — | 5.7L | V8 | 141.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1993 | Chevrolet | C1500 | — | — | 5.7L | V8 | — | N/A | with 3 (in) Muffler Inlet; without Welded Converter |
| 1993 | Chevrolet | C2500 | — | — | 5.7L | V8 | 131.5" | N/A | Below 8500 (lb) GVW; with 2.5 (in) Muffler Inlet |
| 1993 | Chevrolet | C2500 | — | — | 5.7L | V8 | 141.5" | N/A | Below 8500 (lb) GVW; with 2.5 (in) Muffler Inlet |
| 1993 | Chevrolet | C2500 | — | — | 5.7L | V8 | 131.5" | N/A | Below 8500 (lb) GVW; with 3 (in) Muffler Inlet |
| 1993 | Chevrolet | C2500 | — | — | 5.7L | V8 | 155.5" | N/A | Over 8500 (lb) GVW; with 3 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet; If welded assembly, replace all required parts |
| 1993 | Chevrolet | C2500 | — | — | 5.7L | V8 | 155.5" | N/A | Over 8500 (lb) GVW; with 2.5 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet |
| 1993 | Chevrolet | C2500 | — | — | 5.7L | V8 | 155.5" | N/A | Below 8500 (lb) GVW; with 3 (in) Muffler Inlet |
| 1993 | Chevrolet | C2500 | — | — | 5.7L | V8 | 131.5" | N/A | Over 8500 (lb) GVW; with 2.5 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet |
| 1993 | Chevrolet | C2500 | — | — | 5.7L | V8 | 131.5" | N/A | Over 8500 (lb) GVW; with 3 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet; If welded assembly, replace all required parts |
| 1993 | Chevrolet | C2500 | — | — | 5.7L | V8 | 141.5" | N/A | Below 8500 (lb) GVW; with 3 (in) Muffler Inlet |
| 1993 | Chevrolet | C2500 | — | — | 4.3L | V6 | 155.5" | N/A | Over 8500 (lb) GVW; with 3 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet |
| 1993 | Chevrolet | C2500 | — | — | 4.3L | V6 | 131.5" | N/A | Over 8500 (lb) GVW; with 3 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet |
| 1993 | Chevrolet | C2500 | — | — | 5.7L | V8 | 155.5" | N/A | Below 8500 (lb) GVW; with 2.5 (in) Muffler Inlet |
| 1993 | Chevrolet | C3500 | — | — | 5.7L | V8 | 155.5" | N/A | with 2.5 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet |
| 1993 | Chevrolet | C3500 | — | — | 5.7L | V8 | 155.5" | N/A | with 3 (in) Muffler Inlet; Requires 41970 |
| 1993 | Chevrolet | C3500 | — | — | 5.7L | V8 | 131.5" | N/A | with 3 (in) Muffler Inlet; Requires 41970 |
| 1993 | Chevrolet | C3500 | — | — | 5.7L | V8 | 168.5" | N/A | Requires 41970; If welded assembly, replace all required parts |
| 1993 | Chevrolet | C3500 | — | — | 5.7L | V8 | 131.5" | N/A | with 2.5 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet |
| 1993 | Chevrolet | C3500 | Cab & Chassis | — | 5.7L | V8 | 135.5" | N/A | Below 15000 (lb) GVW; with Catalytic Converter; Requires 41970 At Left Hand Outlet |
| 1993 | Chevrolet | C3500 | Cab & Chassis | — | 5.7L | V8 | 159.5" | N/A | Below 15000 (lb) GVW; with Catalytic Converter; Requires 41970 At Left Hand Outlet |
| 1993 | Chevrolet | K1500 | — | — | 5.7L | V8 | 141.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1993 | Chevrolet | K1500 | — | — | 5.7L | V8 | 131.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1993 | Chevrolet | K1500 | — | — | 5.7L | V8 | 155.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1993 | Chevrolet | K1500 | — | — | 5.7L | V8 | 117.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1993 | Chevrolet | K1500 | — | — | 5.7L | V8 | — | N/A | with 3 (in) Muffler Inlet; without Welded Converter |
| 1993 | Chevrolet | K2500 | — | — | 5.7L | V8 | 131.5" | N/A | Below 8500 (lb) GVW; with 2.5 (in) Muffler Inlet |
| 1993 | Chevrolet | K2500 | — | — | 5.7L | V8 | 141.5" | N/A | Below 8500 (lb) GVW; with 3 (in) Muffler Inlet |
| 1993 | Chevrolet | K2500 | — | — | 5.7L | V8 | 155.5" | N/A | Over 8500 (lb) GVW; with 3 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet; If welded assembly, replace all required parts |
| 1993 | Chevrolet | K2500 | — | — | 5.7L | V8 | 131.5" | N/A | Over 8500 (lb) GVW; with 2.5 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet |
| 1993 | Chevrolet | K2500 | — | — | 4.3L | V6 | 155.5" | N/A | Over 8500 (lb) GVW; with 3 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet |
| 1993 | Chevrolet | K2500 | — | — | 5.7L | V8 | 131.5" | N/A | Over 8500 (lb) GVW; with 3 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet; If welded assembly, replace all required parts |
| 1993 | Chevrolet | K2500 | — | — | 5.7L | V8 | 141.5" | N/A | Below 8500 (lb) GVW; with 2.5 (in) Muffler Inlet |
| 1993 | Chevrolet | K2500 | — | — | 5.7L | V8 | 155.5" | N/A | Over 8500 (lb) GVW; with 2.5 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet |
| 1993 | Chevrolet | K2500 | — | — | 5.7L | V8 | 155.5" | N/A | Below 8500 (lb) GVW; with 3 (in) Muffler Inlet |
| 1993 | Chevrolet | K2500 | — | — | 4.3L | V6 | 131.5" | N/A | Over 8500 (lb) GVW; with 3 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet |
| 1993 | Chevrolet | K2500 | — | — | 4.3L | V6 | 155.5" | N/A | Over 8500 (lb) GVW; with 2.5 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet; If welded assembly, replace all required parts |
| 1993 | Chevrolet | K2500 | — | — | 5.7L | V8 | 131.5" | N/A | Below 8500 (lb) GVW; with 3 (in) Muffler Inlet |
| 1993 | Chevrolet | K2500 | — | — | 5.7L | V8 | 155.5" | N/A | Below 8500 (lb) GVW; with 2.5 (in) Muffler Inlet |
| 1993 | Chevrolet | K3500 | — | — | 5.7L | V8 | 155.5" | N/A | with 2.5 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet |
| 1993 | Chevrolet | K3500 | — | — | 5.7L | V8 | 168.5" | N/A | Requires 41970; If welded assembly, replace all required parts |
| 1993 | Chevrolet | K3500 | — | — | 5.7L | V8 | 131.5" | N/A | with 3 (in) Muffler Inlet; with Single Catalytic Converter; Requires 41970 At Left Hand Outlet |
| 1993 | Chevrolet | K3500 | — | — | 5.7L | V8 | 155.5" | N/A | with 3 (in) Muffler Inlet; with Single Catalytic Converter; Requires 41970 At Left Hand Outlet |
| 1993 | Chevrolet | K3500 | — | — | 5.7L | V8 | 131.5" | N/A | with 2.5 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet |
| 1993 | Chevrolet | K3500 | Cab & Chassis | — | 5.7L | V8 | 159.5" | N/A | Below 15000 (lb) GVW; with Catalytic Converter; Requires 41970 At Left Hand Outlet |
| 1993 | Chevrolet | K3500 | Cab & Chassis | — | 5.7L | V8 | 135.5" | N/A | Below 15000 (lb) GVW; with Catalytic Converter; Requires 41970 At Left Hand Outlet |
| 1993 | GMC | C1500 | — | — | 5.7L | V8 | 131.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1993 | GMC | C1500 | — | — | 5.7L | V8 | 141.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1993 | GMC | C1500 | — | — | 5.7L | V8 | 117.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1993 | GMC | C1500 | — | — | 5.7L | V8 | 155.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1993 | GMC | C1500 | — | — | 5.7L | V8 | — | N/A | with 3 (in) Muffler Inlet; without Welded Converter |
| 1993 | GMC | C2500 | — | — | 4.3L | V6 | 155.5" | N/A | Over 8500 (lb) GVW; with 3 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet |
| 1993 | GMC | C2500 | — | — | 5.7L | V8 | 131.5" | N/A | Below 8500 (lb) GVW; with 3 (in) Muffler Inlet |
| 1993 | GMC | C2500 | — | — | 5.7L | V8 | 155.5" | N/A | Over 8500 (lb) GVW; with 3 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet; If welded assembly, replace all required parts |
| 1993 | GMC | C2500 | — | — | 5.7L | V8 | 155.5" | N/A | Over 8500 (lb) GVW; with 2.5 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet |
| 1993 | GMC | C2500 | — | — | 5.7L | V8 | 131.5" | N/A | Below 8500 (lb) GVW; with 2.5 (in) Muffler Inlet |
| 1993 | GMC | C2500 | — | — | 4.3L | V6 | 131.5" | N/A | Over 8500 (lb) GVW; with 3 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet |
| 1993 | GMC | C2500 | — | — | 5.7L | V8 | 155.5" | N/A | Below 8500 (lb) GVW; with 3 (in) Muffler Inlet |
| 1993 | GMC | C2500 | — | — | 5.7L | V8 | 131.5" | N/A | Over 8500 (lb) GVW; with 3 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet; If welded assembly, replace all required parts |
| 1993 | GMC | C2500 | — | — | 5.7L | V8 | 131.5" | N/A | Over 8500 (lb) GVW; with 2.5 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet |
| 1993 | GMC | C2500 | — | — | 5.7L | V8 | 141.5" | N/A | Below 8500 (lb) GVW; with 2.5 (in) Muffler Inlet |
| 1993 | GMC | C2500 | — | — | 5.7L | V8 | 141.5" | N/A | Below 8500 (lb) GVW; with 3 (in) Muffler Inlet |
| 1993 | GMC | C2500 | — | — | 5.7L | V8 | 155.5" | N/A | Below 8500 (lb) GVW; with 2.5 (in) Muffler Inlet |
| 1993 | GMC | C3500 | — | — | 5.7L | V8 | 168.5" | N/A | Requires 41970; If welded assembly, replace all required parts |
| 1993 | GMC | C3500 | — | — | 5.7L | V8 | 155.5" | N/A | with 2.5 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet |
| 1993 | GMC | C3500 | — | — | 5.7L | V8 | 155.5" | N/A | with 3 (in) Muffler Inlet; Requires 41970 |
| 1993 | GMC | C3500 | — | — | 5.7L | V8 | 131.5" | N/A | with 2.5 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet |
| 1993 | GMC | C3500 | — | — | 5.7L | V8 | 131.5" | N/A | with 3 (in) Muffler Inlet; Requires 41970 |
| 1993 | GMC | C3500 | Cab & Chassis | — | 5.7L | V8 | 135.5" | N/A | Below 15000 (lb) GVW; with Catalytic Converter; Requires 41970 At Left Hand Outlet |
| 1993 | GMC | C3500 | Cab & Chassis | — | 5.7L | V8 | 159.5" | N/A | Below 15000 (lb) GVW; with Catalytic Converter; Requires 41970 At Left Hand Outlet |
| 1993 | GMC | K1500 | — | — | 5.7L | V8 | 141.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1993 | GMC | K1500 | — | — | 5.7L | V8 | 131.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1993 | GMC | K1500 | — | — | 5.7L | V8 | 117.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1993 | GMC | K1500 | — | — | 5.7L | V8 | 155.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1993 | GMC | K1500 | — | — | 5.7L | V8 | — | N/A | with 3 (in) Muffler Inlet; without Welded Converter |
| 1993 | GMC | K2500 | — | — | 5.7L | V8 | 155.5" | N/A | Over 8500 (lb) GVW; with 2.5 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet |
| 1993 | GMC | K2500 | — | — | 5.7L | V8 | 155.5" | N/A | Below 8500 (lb) GVW; with 2.5 (in) Muffler Inlet |
| 1993 | GMC | K2500 | — | — | 5.7L | V8 | 131.5" | N/A | Below 8500 (lb) GVW; with 3 (in) Muffler Inlet |
| 1993 | GMC | K2500 | — | — | 5.7L | V8 | 141.5" | N/A | Below 8500 (lb) GVW; with 2.5 (in) Muffler Inlet |
| 1993 | GMC | K2500 | — | — | 5.7L | V8 | 131.5" | N/A | Over 8500 (lb) GVW; with 2.5 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet |
| 1993 | GMC | K2500 | — | — | 5.7L | V8 | 141.5" | N/A | Below 8500 (lb) GVW; with 3 (in) Muffler Inlet |
| 1993 | GMC | K2500 | — | — | 4.3L | V6 | 131.5" | N/A | Over 8500 (lb) GVW; with 3 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet |
| 1993 | GMC | K2500 | — | — | 5.7L | V8 | 155.5" | N/A | Below 8500 (lb) GVW; with 3 (in) Muffler Inlet |
| 1993 | GMC | K2500 | — | — | 4.3L | V6 | 155.5" | N/A | Over 8500 (lb) GVW; with 2.5 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet; If welded assembly, replace all required parts |
| 1993 | GMC | K2500 | — | — | 5.7L | V8 | 155.5" | N/A | Over 8500 (lb) GVW; with 3 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet; If welded assembly, replace all required parts |
| 1993 | GMC | K2500 | — | — | 5.7L | V8 | 131.5" | N/A | Below 8500 (lb) GVW; with 2.5 (in) Muffler Inlet |
| 1993 | GMC | K2500 | — | — | 4.3L | V6 | 155.5" | N/A | Over 8500 (lb) GVW; with 3 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet |
| 1993 | GMC | K2500 | — | — | 5.7L | V8 | 131.5" | N/A | Over 8500 (lb) GVW; with 3 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet; If welded assembly, replace all required parts |
| 1993 | GMC | K3500 | — | — | 5.7L | V8 | 168.5" | N/A | Requires 41970; If welded assembly, replace all required parts |
| 1993 | GMC | K3500 | — | — | 5.7L | V8 | 155.5" | N/A | with 3 (in) Muffler Inlet; with Single Catalytic Converter; Requires 41970 At Left Hand Outlet |
| 1993 | GMC | K3500 | — | — | 5.7L | V8 | 155.5" | N/A | with 2.5 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet |
| 1993 | GMC | K3500 | — | — | 5.7L | V8 | 131.5" | N/A | with 2.5 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet |
| 1993 | GMC | K3500 | — | — | 5.7L | V8 | 131.5" | N/A | with 3 (in) Muffler Inlet; with Single Catalytic Converter; Requires 41970 At Left Hand Outlet |
| 1993 | GMC | K3500 | Cab & Chassis | — | 5.7L | V8 | 159.5" | N/A | Below 15000 (lb) GVW; with Catalytic Converter; Requires 41970 At Left Hand Outlet |
| 1993 | GMC | K3500 | Cab & Chassis | — | 5.7L | V8 | 135.5" | N/A | Below 15000 (lb) GVW; with Catalytic Converter; Requires 41970 At Left Hand Outlet |
| 1993 | GMC | Yukon | — | 4WD | 5.7L | V8 | — | N/A | with Single Catalytic Converter |
| 1992 | Chevrolet | Blazer | — | 4WD | 5.7L | V8 | — | N/A | without Welded Converter |
| 1992 | Chevrolet | C1500 | — | — | 5.7L | V8 | 131.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1992 | Chevrolet | C1500 | — | — | 5.7L | V8 | 117.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1992 | Chevrolet | C1500 | — | — | 5.7L | V8 | 155.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1992 | Chevrolet | C1500 | — | — | 5.7L | V8 | 141.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1992 | Chevrolet | C1500 | — | — | 5.7L | V8 | — | N/A | with 3 (in) Muffler Inlet; without Welded Converter |
| 1992 | Chevrolet | C2500 | — | — | 5.7L | V8 | 131.5" | N/A | Below 8500 (lb) GVW; with 2.5 (in) Muffler Inlet |
| 1992 | Chevrolet | C2500 | — | — | 5.7L | V8 | 141.5" | N/A | Below 8500 (lb) GVW; with 2.5 (in) Muffler Inlet |
| 1992 | Chevrolet | C2500 | — | — | 5.7L | V8 | 131.5" | N/A | Below 8500 (lb) GVW; with 3 (in) Muffler Inlet |
| 1992 | Chevrolet | C2500 | — | — | 5.7L | V8 | 155.5" | N/A | Over 8500 (lb) GVW; with 3 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet; If welded assembly, replace all required parts |
| 1992 | Chevrolet | C2500 | — | — | 5.7L | V8 | 155.5" | N/A | Over 8500 (lb) GVW; with 2.5 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet |
| 1992 | Chevrolet | C2500 | — | — | 5.7L | V8 | 155.5" | N/A | Below 8500 (lb) GVW; with 3 (in) Muffler Inlet |
| 1992 | Chevrolet | C2500 | — | — | 5.7L | V8 | 131.5" | N/A | Over 8500 (lb) GVW; with 2.5 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet |
| 1992 | Chevrolet | C2500 | — | — | 5.7L | V8 | 131.5" | N/A | Over 8500 (lb) GVW; with 3 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet; If welded assembly, replace all required parts |
| 1992 | Chevrolet | C2500 | — | — | 5.7L | V8 | 141.5" | N/A | Below 8500 (lb) GVW; with 3 (in) Muffler Inlet |
| 1992 | Chevrolet | C2500 | — | — | 4.3L | V6 | 155.5" | N/A | Over 8500 (lb) GVW; with 3 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet |
| 1992 | Chevrolet | C2500 | — | — | 4.3L | V6 | 131.5" | N/A | Over 8500 (lb) GVW; with 3 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet |
| 1992 | Chevrolet | C2500 | — | — | 5.7L | V8 | 155.5" | N/A | Below 8500 (lb) GVW; with 2.5 (in) Muffler Inlet |
| 1992 | Chevrolet | C3500 | — | — | 5.7L | V8 | 155.5" | N/A | with 2.5 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet |
| 1992 | Chevrolet | C3500 | — | — | 5.7L | V8 | 155.5" | N/A | with 3 (in) Muffler Inlet; Requires 41970 |
| 1992 | Chevrolet | C3500 | — | — | 5.7L | V8 | 131.5" | N/A | with 3 (in) Muffler Inlet; Requires 41970 |
| 1992 | Chevrolet | C3500 | — | — | 5.7L | V8 | 168.5" | N/A | Requires 41970; If welded assembly, replace all required parts |
| 1992 | Chevrolet | C3500 | — | — | 5.7L | V8 | 131.5" | N/A | with 2.5 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet |
| 1992 | Chevrolet | C3500 | Cab & Chassis | — | 5.7L | V8 | 135.5" | N/A | Below 15000 (lb) GVW; with Catalytic Converter; Requires 41970 At Left Hand Outlet |
| 1992 | Chevrolet | C3500 | Cab & Chassis | — | 5.7L | V8 | 159.5" | N/A | Below 15000 (lb) GVW; with Catalytic Converter; Requires 41970 At Left Hand Outlet |
| 1992 | Chevrolet | K1500 | — | — | 5.7L | V8 | 141.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1992 | Chevrolet | K1500 | — | — | 5.7L | V8 | 131.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1992 | Chevrolet | K1500 | — | — | 5.7L | V8 | 155.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1992 | Chevrolet | K1500 | — | — | 5.7L | V8 | 117.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1992 | Chevrolet | K1500 | — | — | 5.7L | V8 | — | N/A | with 3 (in) Muffler Inlet; without Welded Converter |
| 1992 | Chevrolet | K2500 | — | — | 5.7L | V8 | 131.5" | N/A | Below 8500 (lb) GVW; with 2.5 (in) Muffler Inlet |
| 1992 | Chevrolet | K2500 | — | — | 5.7L | V8 | 141.5" | N/A | Below 8500 (lb) GVW; with 3 (in) Muffler Inlet |
| 1992 | Chevrolet | K2500 | — | — | 5.7L | V8 | 155.5" | N/A | Over 8500 (lb) GVW; with 3 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet; If welded assembly, replace all required parts |
| 1992 | Chevrolet | K2500 | — | — | 5.7L | V8 | 131.5" | N/A | Over 8500 (lb) GVW; with 2.5 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet |
| 1992 | Chevrolet | K2500 | — | — | 4.3L | V6 | 155.5" | N/A | Over 8500 (lb) GVW; with 3 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet |
| 1992 | Chevrolet | K2500 | — | — | 5.7L | V8 | 131.5" | N/A | Over 8500 (lb) GVW; with 3 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet; If welded assembly, replace all required parts |
| 1992 | Chevrolet | K2500 | — | — | 5.7L | V8 | 141.5" | N/A | Below 8500 (lb) GVW; with 2.5 (in) Muffler Inlet |
| 1992 | Chevrolet | K2500 | — | — | 5.7L | V8 | 155.5" | N/A | Over 8500 (lb) GVW; with 2.5 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet |
| 1992 | Chevrolet | K2500 | — | — | 5.7L | V8 | 155.5" | N/A | Below 8500 (lb) GVW; with 3 (in) Muffler Inlet |
| 1992 | Chevrolet | K2500 | — | — | 4.3L | V6 | 131.5" | N/A | Over 8500 (lb) GVW; with 3 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet |
| 1992 | Chevrolet | K2500 | — | — | 4.3L | V6 | 155.5" | N/A | Over 8500 (lb) GVW; with 2.5 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet; If welded assembly, replace all required parts |
| 1992 | Chevrolet | K2500 | — | — | 5.7L | V8 | 131.5" | N/A | Below 8500 (lb) GVW; with 3 (in) Muffler Inlet |
| 1992 | Chevrolet | K2500 | — | — | 5.7L | V8 | 155.5" | N/A | Below 8500 (lb) GVW; with 2.5 (in) Muffler Inlet |
| 1992 | Chevrolet | K3500 | — | — | 5.7L | V8 | 155.5" | N/A | with 2.5 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet |
| 1992 | Chevrolet | K3500 | — | — | 5.7L | V8 | 168.5" | N/A | Requires 41970; If welded assembly, replace all required parts |
| 1992 | Chevrolet | K3500 | — | — | 5.7L | V8 | 131.5" | N/A | with 3 (in) Muffler Inlet; with Single Catalytic Converter; Requires 41970 At Left Hand Outlet |
| 1992 | Chevrolet | K3500 | — | — | 5.7L | V8 | 155.5" | N/A | with 3 (in) Muffler Inlet; with Single Catalytic Converter; Requires 41970 At Left Hand Outlet |
| 1992 | Chevrolet | K3500 | — | — | 5.7L | V8 | 131.5" | N/A | with 2.5 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet |
| 1992 | Chevrolet | K3500 | Cab & Chassis | — | 5.7L | V8 | 159.5" | N/A | Below 15000 (lb) GVW; with Catalytic Converter; Requires 41970 At Left Hand Outlet |
| 1992 | Chevrolet | K3500 | Cab & Chassis | — | 5.7L | V8 | 135.5" | N/A | Below 15000 (lb) GVW; with Catalytic Converter; Requires 41970 At Left Hand Outlet |
| 1992 | GMC | C1500 | — | — | 5.7L | V8 | 131.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1992 | GMC | C1500 | — | — | 5.7L | V8 | 141.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1992 | GMC | C1500 | — | — | 5.7L | V8 | 117.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1992 | GMC | C1500 | — | — | 5.7L | V8 | 155.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1992 | GMC | C1500 | — | — | 5.7L | V8 | — | N/A | with 3 (in) Muffler Inlet; without Welded Converter |
| 1992 | GMC | C2500 | — | — | 4.3L | V6 | 155.5" | N/A | Over 8500 (lb) GVW; with 3 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet |
| 1992 | GMC | C2500 | — | — | 5.7L | V8 | 131.5" | N/A | Below 8500 (lb) GVW; with 3 (in) Muffler Inlet |
| 1992 | GMC | C2500 | — | — | 5.7L | V8 | 155.5" | N/A | Over 8500 (lb) GVW; with 3 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet; If welded assembly, replace all required parts |
| 1992 | GMC | C2500 | — | — | 5.7L | V8 | 155.5" | N/A | Over 8500 (lb) GVW; with 2.5 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet |
| 1992 | GMC | C2500 | — | — | 5.7L | V8 | 131.5" | N/A | Below 8500 (lb) GVW; with 2.5 (in) Muffler Inlet |
| 1992 | GMC | C2500 | — | — | 4.3L | V6 | 131.5" | N/A | Over 8500 (lb) GVW; with 3 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet |
| 1992 | GMC | C2500 | — | — | 5.7L | V8 | 155.5" | N/A | Below 8500 (lb) GVW; with 3 (in) Muffler Inlet |
| 1992 | GMC | C2500 | — | — | 5.7L | V8 | 131.5" | N/A | Over 8500 (lb) GVW; with 3 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet; If welded assembly, replace all required parts |
| 1992 | GMC | C2500 | — | — | 5.7L | V8 | 131.5" | N/A | Over 8500 (lb) GVW; with 2.5 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet |
| 1992 | GMC | C2500 | — | — | 5.7L | V8 | 141.5" | N/A | Below 8500 (lb) GVW; with 2.5 (in) Muffler Inlet |
| 1992 | GMC | C2500 | — | — | 5.7L | V8 | 141.5" | N/A | Below 8500 (lb) GVW; with 3 (in) Muffler Inlet |
| 1992 | GMC | C2500 | — | — | 5.7L | V8 | 155.5" | N/A | Below 8500 (lb) GVW; with 2.5 (in) Muffler Inlet |
| 1992 | GMC | C3500 | — | — | 5.7L | V8 | 168.5" | N/A | Requires 41970; If welded assembly, replace all required parts |
| 1992 | GMC | C3500 | — | — | 5.7L | V8 | 155.5" | N/A | with 2.5 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet |
| 1992 | GMC | C3500 | — | — | 5.7L | V8 | 155.5" | N/A | with 3 (in) Muffler Inlet; Requires 41970 |
| 1992 | GMC | C3500 | — | — | 5.7L | V8 | 131.5" | N/A | with 2.5 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet |
| 1992 | GMC | C3500 | — | — | 5.7L | V8 | 131.5" | N/A | with 3 (in) Muffler Inlet; Requires 41970 |
| 1992 | GMC | C3500 | Cab & Chassis | — | 5.7L | V8 | 135.5" | N/A | Below 15000 (lb) GVW; with Catalytic Converter; Requires 41970 At Left Hand Outlet |
| 1992 | GMC | C3500 | Cab & Chassis | — | 5.7L | V8 | 159.5" | N/A | Below 15000 (lb) GVW; with Catalytic Converter; Requires 41970 At Left Hand Outlet |
| 1992 | GMC | K1500 | — | — | 5.7L | V8 | 141.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1992 | GMC | K1500 | — | — | 5.7L | V8 | 131.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1992 | GMC | K1500 | — | — | 5.7L | V8 | 117.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1992 | GMC | K1500 | — | — | 5.7L | V8 | 155.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1992 | GMC | K1500 | — | — | 5.7L | V8 | — | N/A | with 3 (in) Muffler Inlet; without Welded Converter |
| 1992 | GMC | K2500 | — | — | 5.7L | V8 | 155.5" | N/A | Over 8500 (lb) GVW; with 2.5 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet |
| 1992 | GMC | K2500 | — | — | 5.7L | V8 | 155.5" | N/A | Below 8500 (lb) GVW; with 2.5 (in) Muffler Inlet |
| 1992 | GMC | K2500 | — | — | 5.7L | V8 | 131.5" | N/A | Below 8500 (lb) GVW; with 3 (in) Muffler Inlet |
| 1992 | GMC | K2500 | — | — | 5.7L | V8 | 141.5" | N/A | Below 8500 (lb) GVW; with 2.5 (in) Muffler Inlet |
| 1992 | GMC | K2500 | — | — | 5.7L | V8 | 131.5" | N/A | Over 8500 (lb) GVW; with 2.5 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet |
| 1992 | GMC | K2500 | — | — | 5.7L | V8 | 141.5" | N/A | Below 8500 (lb) GVW; with 3 (in) Muffler Inlet |
| 1992 | GMC | K2500 | — | — | 4.3L | V6 | 131.5" | N/A | Over 8500 (lb) GVW; with 3 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet |
| 1992 | GMC | K2500 | — | — | 5.7L | V8 | 155.5" | N/A | Below 8500 (lb) GVW; with 3 (in) Muffler Inlet |
| 1992 | GMC | K2500 | — | — | 4.3L | V6 | 155.5" | N/A | Over 8500 (lb) GVW; with 2.5 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet; If welded assembly, replace all required parts |
| 1992 | GMC | K2500 | — | — | 5.7L | V8 | 155.5" | N/A | Over 8500 (lb) GVW; with 3 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet; If welded assembly, replace all required parts |
| 1992 | GMC | K2500 | — | — | 5.7L | V8 | 131.5" | N/A | Below 8500 (lb) GVW; with 2.5 (in) Muffler Inlet |
| 1992 | GMC | K2500 | — | — | 4.3L | V6 | 155.5" | N/A | Over 8500 (lb) GVW; with 3 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet |
| 1992 | GMC | K2500 | — | — | 5.7L | V8 | 131.5" | N/A | Over 8500 (lb) GVW; with 3 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet; If welded assembly, replace all required parts |
| 1992 | GMC | K3500 | — | — | 5.7L | V8 | 168.5" | N/A | Requires 41970; If welded assembly, replace all required parts |
| 1992 | GMC | K3500 | — | — | 5.7L | V8 | 155.5" | N/A | with 3 (in) Muffler Inlet; with Single Catalytic Converter; Requires 41970 At Left Hand Outlet |
| 1992 | GMC | K3500 | — | — | 5.7L | V8 | 155.5" | N/A | with 2.5 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet |
| 1992 | GMC | K3500 | — | — | 5.7L | V8 | 131.5" | N/A | with 2.5 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet |
| 1992 | GMC | K3500 | — | — | 5.7L | V8 | 131.5" | N/A | with 3 (in) Muffler Inlet; with Single Catalytic Converter; Requires 41970 At Left Hand Outlet |
| 1992 | GMC | K3500 | Cab & Chassis | — | 5.7L | V8 | 159.5" | N/A | Below 15000 (lb) GVW; with Catalytic Converter; Requires 41970 At Left Hand Outlet |
| 1992 | GMC | K3500 | Cab & Chassis | — | 5.7L | V8 | 135.5" | N/A | Below 15000 (lb) GVW; with Catalytic Converter; Requires 41970 At Left Hand Outlet |
| 1992 | GMC | Yukon | — | 4WD | 5.7L | V8 | — | N/A | with Single Catalytic Converter |
| 1991 | Chevrolet | C1500 | — | — | 5.7L | V8 | 131.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1991 | Chevrolet | C1500 | — | — | 5.7L | V8 | 117.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1991 | Chevrolet | C1500 | — | — | 5.7L | V8 | 155.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1991 | Chevrolet | C1500 | — | — | 5.7L | V8 | 141.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1991 | Chevrolet | C1500 | — | — | 5.7L | V8 | — | N/A | with 3 (in) Muffler Inlet; without Welded Converter |
| 1991 | Chevrolet | C2500 | — | — | 5.7L | V8 | 131.5" | N/A | Below 8500 (lb) GVW; with 2.5 (in) Muffler Inlet |
| 1991 | Chevrolet | C2500 | — | — | 5.7L | V8 | 141.5" | N/A | Below 8500 (lb) GVW; with 2.5 (in) Muffler Inlet |
| 1991 | Chevrolet | C2500 | — | — | 5.7L | V8 | 131.5" | N/A | Below 8500 (lb) GVW; with 3 (in) Muffler Inlet |
| 1991 | Chevrolet | C2500 | — | — | 5.7L | V8 | 155.5" | N/A | Over 8500 (lb) GVW; with 3 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet; If welded assembly, replace all required parts |
| 1991 | Chevrolet | C2500 | — | — | 5.7L | V8 | 155.5" | N/A | Over 8500 (lb) GVW; with 2.5 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet |
| 1991 | Chevrolet | C2500 | — | — | 5.7L | V8 | 155.5" | N/A | Below 8500 (lb) GVW; with 3 (in) Muffler Inlet |
| 1991 | Chevrolet | C2500 | — | — | 5.7L | V8 | 131.5" | N/A | Over 8500 (lb) GVW; with 2.5 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet |
| 1991 | Chevrolet | C2500 | — | — | 5.7L | V8 | 131.5" | N/A | Over 8500 (lb) GVW; with 3 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet; If welded assembly, replace all required parts |
| 1991 | Chevrolet | C2500 | — | — | 5.7L | V8 | 141.5" | N/A | Below 8500 (lb) GVW; with 3 (in) Muffler Inlet |
| 1991 | Chevrolet | C2500 | — | — | 4.3L | V6 | 155.5" | N/A | Over 8500 (lb) GVW; with 3 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet |
| 1991 | Chevrolet | C2500 | — | — | 4.3L | V6 | 131.5" | N/A | Over 8500 (lb) GVW; with 3 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet |
| 1991 | Chevrolet | C2500 | — | — | 5.7L | V8 | 155.5" | N/A | Below 8500 (lb) GVW; with 2.5 (in) Muffler Inlet |
| 1991 | Chevrolet | C3500 | — | — | 5.7L | V8 | 155.5" | N/A | with 2.5 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet |
| 1991 | Chevrolet | C3500 | — | — | 5.7L | V8 | 155.5" | N/A | with 3 (in) Muffler Inlet; Requires 41970 |
| 1991 | Chevrolet | C3500 | — | — | 5.7L | V8 | 131.5" | N/A | with 3 (in) Muffler Inlet; Requires 41970 |
| 1991 | Chevrolet | C3500 | — | — | 5.7L | V8 | 131.5" | N/A | with 2.5 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet |
| 1991 | Chevrolet | C3500 | Cab & Chassis | — | 5.7L | V8 | 135.5" | N/A | Below 15000 (lb) GVW; with Catalytic Converter; Requires 41970 At Left Hand Outlet |
| 1991 | Chevrolet | C3500 | Cab & Chassis | — | 5.7L | V8 | 159.5" | N/A | Below 15000 (lb) GVW; with Catalytic Converter; Requires 41970 At Left Hand Outlet |
| 1991 | Chevrolet | K1500 | — | — | 5.7L | V8 | 141.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1991 | Chevrolet | K1500 | — | — | 5.7L | V8 | 131.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1991 | Chevrolet | K1500 | — | — | 5.7L | V8 | 155.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1991 | Chevrolet | K1500 | — | — | 5.7L | V8 | 117.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1991 | Chevrolet | K1500 | — | — | 5.7L | V8 | — | N/A | with 3 (in) Muffler Inlet; without Welded Converter |
| 1991 | Chevrolet | K2500 | — | — | 5.7L | V8 | 131.5" | N/A | Below 8500 (lb) GVW; with 2.5 (in) Muffler Inlet |
| 1991 | Chevrolet | K2500 | — | — | 5.7L | V8 | 141.5" | N/A | Below 8500 (lb) GVW; with 3 (in) Muffler Inlet |
| 1991 | Chevrolet | K2500 | — | — | 5.7L | V8 | 155.5" | N/A | Over 8500 (lb) GVW; with 3 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet; If welded assembly, replace all required parts |
| 1991 | Chevrolet | K2500 | — | — | 5.7L | V8 | 131.5" | N/A | Over 8500 (lb) GVW; with 2.5 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet |
| 1991 | Chevrolet | K2500 | — | — | 4.3L | V6 | 155.5" | N/A | Over 8500 (lb) GVW; with 3 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet |
| 1991 | Chevrolet | K2500 | — | — | 5.7L | V8 | 131.5" | N/A | Over 8500 (lb) GVW; with 3 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet; If welded assembly, replace all required parts |
| 1991 | Chevrolet | K2500 | — | — | 5.7L | V8 | 141.5" | N/A | Below 8500 (lb) GVW; with 2.5 (in) Muffler Inlet |
| 1991 | Chevrolet | K2500 | — | — | 5.7L | V8 | 155.5" | N/A | Over 8500 (lb) GVW; with 2.5 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet |
| 1991 | Chevrolet | K2500 | — | — | 5.7L | V8 | 155.5" | N/A | Below 8500 (lb) GVW; with 3 (in) Muffler Inlet |
| 1991 | Chevrolet | K2500 | — | — | 4.3L | V6 | 131.5" | N/A | Over 8500 (lb) GVW; with 3 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet |
| 1991 | Chevrolet | K2500 | — | — | 4.3L | V6 | 155.5" | N/A | Over 8500 (lb) GVW; with 2.5 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet; If welded assembly, replace all required parts |
| 1991 | Chevrolet | K2500 | — | — | 5.7L | V8 | 131.5" | N/A | Below 8500 (lb) GVW; with 3 (in) Muffler Inlet |
| 1991 | Chevrolet | K2500 | — | — | 5.7L | V8 | 155.5" | N/A | Below 8500 (lb) GVW; with 2.5 (in) Muffler Inlet |
| 1991 | Chevrolet | K3500 | — | — | 5.7L | V8 | 155.5" | N/A | with 2.5 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet |
| 1991 | Chevrolet | K3500 | — | — | 5.7L | V8 | 131.5" | N/A | with 3 (in) Muffler Inlet; with Single Catalytic Converter; Requires 41970 At Left Hand Outlet |
| 1991 | Chevrolet | K3500 | — | — | 5.7L | V8 | 155.5" | N/A | with 3 (in) Muffler Inlet; with Single Catalytic Converter; Requires 41970 At Left Hand Outlet |
| 1991 | Chevrolet | K3500 | — | — | 5.7L | V8 | 131.5" | N/A | with 2.5 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet |
| 1991 | Chevrolet | K3500 | Cab & Chassis | — | 5.7L | V8 | 159.5" | N/A | Below 15000 (lb) GVW; with Catalytic Converter; Requires 41970 At Left Hand Outlet |
| 1991 | Chevrolet | K3500 | Cab & Chassis | — | 5.7L | V8 | 135.5" | N/A | Below 15000 (lb) GVW; with Catalytic Converter; Requires 41970 At Left Hand Outlet |
| 1991 | GMC | C1500 | — | — | 5.7L | V8 | 131.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1991 | GMC | C1500 | — | — | 5.7L | V8 | 141.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1991 | GMC | C1500 | — | — | 5.7L | V8 | 117.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1991 | GMC | C1500 | — | — | 5.7L | V8 | 155.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1991 | GMC | C1500 | — | — | 5.7L | V8 | — | N/A | with 3 (in) Muffler Inlet; without Welded Converter |
| 1991 | GMC | C2500 | — | — | 4.3L | V6 | 155.5" | N/A | Over 8500 (lb) GVW; with 3 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet |
| 1991 | GMC | C2500 | — | — | 5.7L | V8 | 131.5" | N/A | Below 8500 (lb) GVW; with 3 (in) Muffler Inlet |
| 1991 | GMC | C2500 | — | — | 5.7L | V8 | 155.5" | N/A | Over 8500 (lb) GVW; with 3 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet; If welded assembly, replace all required parts |
| 1991 | GMC | C2500 | — | — | 5.7L | V8 | 155.5" | N/A | Over 8500 (lb) GVW; with 2.5 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet |
| 1991 | GMC | C2500 | — | — | 5.7L | V8 | 131.5" | N/A | Below 8500 (lb) GVW; with 2.5 (in) Muffler Inlet |
| 1991 | GMC | C2500 | — | — | 4.3L | V6 | 131.5" | N/A | Over 8500 (lb) GVW; with 3 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet |
| 1991 | GMC | C2500 | — | — | 5.7L | V8 | 155.5" | N/A | Below 8500 (lb) GVW; with 3 (in) Muffler Inlet |
| 1991 | GMC | C2500 | — | — | 5.7L | V8 | 131.5" | N/A | Over 8500 (lb) GVW; with 3 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet; If welded assembly, replace all required parts |
| 1991 | GMC | C2500 | — | — | 5.7L | V8 | 131.5" | N/A | Over 8500 (lb) GVW; with 2.5 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet |
| 1991 | GMC | C2500 | — | — | 5.7L | V8 | 141.5" | N/A | Below 8500 (lb) GVW; with 2.5 (in) Muffler Inlet |
| 1991 | GMC | C2500 | — | — | 5.7L | V8 | 141.5" | N/A | Below 8500 (lb) GVW; with 3 (in) Muffler Inlet |
| 1991 | GMC | C2500 | — | — | 5.7L | V8 | 155.5" | N/A | Below 8500 (lb) GVW; with 2.5 (in) Muffler Inlet |
| 1991 | GMC | C3500 | — | — | 5.7L | V8 | 155.5" | N/A | with 2.5 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet |
| 1991 | GMC | C3500 | — | — | 5.7L | V8 | 155.5" | N/A | with 3 (in) Muffler Inlet; Requires 41970 |
| 1991 | GMC | C3500 | — | — | 5.7L | V8 | 131.5" | N/A | with 2.5 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet |
| 1991 | GMC | C3500 | — | — | 5.7L | V8 | 131.5" | N/A | with 3 (in) Muffler Inlet; Requires 41970 |
| 1991 | GMC | C3500 | Cab & Chassis | — | 5.7L | V8 | 135.5" | N/A | Below 15000 (lb) GVW; with Catalytic Converter; Requires 41970 At Left Hand Outlet |
| 1991 | GMC | C3500 | Cab & Chassis | — | 5.7L | V8 | 159.5" | N/A | Below 15000 (lb) GVW; with Catalytic Converter; Requires 41970 At Left Hand Outlet |
| 1991 | GMC | K1500 | — | — | 5.7L | V8 | 141.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1991 | GMC | K1500 | — | — | 5.7L | V8 | 131.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1991 | GMC | K1500 | — | — | 5.7L | V8 | 117.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1991 | GMC | K1500 | — | — | 5.7L | V8 | 155.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1991 | GMC | K1500 | — | — | 5.7L | V8 | — | N/A | with 3 (in) Muffler Inlet; without Welded Converter |
| 1991 | GMC | K2500 | — | — | 5.7L | V8 | 155.5" | N/A | Over 8500 (lb) GVW; with 2.5 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet |
| 1991 | GMC | K2500 | — | — | 5.7L | V8 | 155.5" | N/A | Below 8500 (lb) GVW; with 2.5 (in) Muffler Inlet |
| 1991 | GMC | K2500 | — | — | 5.7L | V8 | 131.5" | N/A | Below 8500 (lb) GVW; with 3 (in) Muffler Inlet |
| 1991 | GMC | K2500 | — | — | 5.7L | V8 | 141.5" | N/A | Below 8500 (lb) GVW; with 2.5 (in) Muffler Inlet |
| 1991 | GMC | K2500 | — | — | 5.7L | V8 | 131.5" | N/A | Over 8500 (lb) GVW; with 2.5 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet |
| 1991 | GMC | K2500 | — | — | 5.7L | V8 | 141.5" | N/A | Below 8500 (lb) GVW; with 3 (in) Muffler Inlet |
| 1991 | GMC | K2500 | — | — | 4.3L | V6 | 131.5" | N/A | Over 8500 (lb) GVW; with 3 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet |
| 1991 | GMC | K2500 | — | — | 5.7L | V8 | 155.5" | N/A | Below 8500 (lb) GVW; with 3 (in) Muffler Inlet |
| 1991 | GMC | K2500 | — | — | 4.3L | V6 | 155.5" | N/A | Over 8500 (lb) GVW; with 2.5 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet; If welded assembly, replace all required parts |
| 1991 | GMC | K2500 | — | — | 5.7L | V8 | 155.5" | N/A | Over 8500 (lb) GVW; with 3 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet; If welded assembly, replace all required parts |
| 1991 | GMC | K2500 | — | — | 5.7L | V8 | 131.5" | N/A | Below 8500 (lb) GVW; with 2.5 (in) Muffler Inlet |
| 1991 | GMC | K2500 | — | — | 4.3L | V6 | 155.5" | N/A | Over 8500 (lb) GVW; with 3 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet |
| 1991 | GMC | K2500 | — | — | 5.7L | V8 | 131.5" | N/A | Over 8500 (lb) GVW; with 3 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet; If welded assembly, replace all required parts |
| 1991 | GMC | K3500 | — | — | 5.7L | V8 | 155.5" | N/A | with 3 (in) Muffler Inlet; with Single Catalytic Converter; Requires 41970 At Left Hand Outlet |
| 1991 | GMC | K3500 | — | — | 5.7L | V8 | 155.5" | N/A | with 2.5 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet |
| 1991 | GMC | K3500 | — | — | 5.7L | V8 | 131.5" | N/A | with 2.5 (in) Muffler Inlet; Requires 41970 At Left Hand Outlet |
| 1991 | GMC | K3500 | — | — | 5.7L | V8 | 131.5" | N/A | with 3 (in) Muffler Inlet; with Single Catalytic Converter; Requires 41970 At Left Hand Outlet |
| 1991 | GMC | K3500 | Cab & Chassis | — | 5.7L | V8 | 159.5" | N/A | Below 15000 (lb) GVW; with Catalytic Converter; Requires 41970 At Left Hand Outlet |
| 1991 | GMC | K3500 | Cab & Chassis | — | 5.7L | V8 | 135.5" | N/A | Below 15000 (lb) GVW; with Catalytic Converter; Requires 41970 At Left Hand Outlet |
| 1990 | Chevrolet | C1500 | — | — | 5.7L | V8 | 131.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1990 | Chevrolet | C1500 | — | — | 5.7L | V8 | 117.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1990 | Chevrolet | C1500 | — | — | 5.7L | V8 | 155.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1990 | Chevrolet | C1500 | — | — | 5.7L | V8 | 141.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1990 | Chevrolet | C1500 | — | — | 5.7L | V8 | — | N/A | with 3 (in) Muffler Inlet; without Welded Converter |
| 1990 | Chevrolet | C2500 | — | — | 5.7L | V8 | 131.5" | N/A | Below 8500 (lb) GVW; with 2.5 (in) Muffler Inlet |
| 1990 | Chevrolet | C2500 | — | — | 5.7L | V8 | 141.5" | N/A | Below 8500 (lb) GVW; with 2.5 (in) Muffler Inlet |
| 1990 | Chevrolet | C2500 | — | — | 5.7L | V8 | 131.5" | N/A | Below 8500 (lb) GVW; with 3 (in) Muffler Inlet |
| 1990 | Chevrolet | C2500 | — | — | 5.7L | V8 | 131.5" | N/A | Over 8500 (lb) GVW; with 2.5 (in) Muffler Inlet; with 8,500 (lb) Gross Vehicle Weight (GVW) |
| 1990 | Chevrolet | C2500 | — | — | 4.3L | V6 | 131.5" | N/A | Over 8500 (lb) GVW; with 3 (in) Muffler Inlet |
| 1990 | Chevrolet | C2500 | — | — | 4.3L | V6 | 155.5" | N/A | Over 8500 (lb) GVW; with 3 (in) Muffler Inlet |
| 1990 | Chevrolet | C2500 | — | — | 5.7L | V8 | 155.5" | N/A | Below 8500 (lb) GVW; with 3 (in) Muffler Inlet |
| 1990 | Chevrolet | C2500 | — | — | 5.7L | V8 | 141.5" | N/A | Below 8500 (lb) GVW; with 3 (in) Muffler Inlet |
| 1990 | Chevrolet | C2500 | — | — | 5.7L | V8 | 155.5" | N/A | Over 8500 (lb) GVW; with 2.5 (in) Muffler Inlet; with 8,500 (lb) Gross Vehicle Weight (GVW) |
| 1990 | Chevrolet | C2500 | — | — | 5.7L | V8 | 155.5" | N/A | Below 8500 (lb) GVW; with 2.5 (in) Muffler Inlet |
| 1990 | Chevrolet | C3500 | — | — | 5.7L | V8 | 131.5" | N/A | with 3 (in) Muffler Inlet |
| 1990 | Chevrolet | C3500 | — | — | 5.7L | V8 | 155.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1990 | Chevrolet | C3500 | — | — | 5.7L | V8 | 131.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1990 | Chevrolet | C3500 | — | — | 5.7L | V8 | 155.5" | N/A | with 3 (in) Muffler Inlet |
| 1990 | Chevrolet | C3500 | Cab & Chassis | — | 5.7L | V8 | 135.5" | N/A | Below 15000 (lb) GVW; with Catalytic Converter; Requires 41970 At Left Hand Outlet |
| 1990 | Chevrolet | C3500 | Cab & Chassis | — | 5.7L | V8 | 159.5" | N/A | Below 15000 (lb) GVW; with Catalytic Converter; Requires 41970 At Left Hand Outlet |
| 1990 | Chevrolet | K1500 | — | — | 5.7L | V8 | 141.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1990 | Chevrolet | K1500 | — | — | 5.7L | V8 | 131.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1990 | Chevrolet | K1500 | — | — | 5.7L | V8 | 155.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1990 | Chevrolet | K1500 | — | — | 5.7L | V8 | 117.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1990 | Chevrolet | K1500 | — | — | 5.7L | V8 | — | N/A | with 3 (in) Muffler Inlet; without Welded Converter |
| 1990 | Chevrolet | K2500 | — | — | 5.7L | V8 | 131.5" | N/A | Below 8500 (lb) GVW; with 2.5 (in) Muffler Inlet |
| 1990 | Chevrolet | K2500 | — | — | 5.7L | V8 | 141.5" | N/A | Below 8500 (lb) GVW; with 3 (in) Muffler Inlet |
| 1990 | Chevrolet | K2500 | — | — | 4.3L | V6 | 131.5" | N/A | Over 8500 (lb) GVW; with 3 (in) Muffler Inlet |
| 1990 | Chevrolet | K2500 | — | — | 5.7L | V8 | 131.5" | N/A | Over 8500 (lb) GVW; with 2.5 (in) Muffler Inlet; with 8,500 (lb) Gross Vehicle Weight (GVW) |
| 1990 | Chevrolet | K2500 | — | — | 5.7L | V8 | 141.5" | N/A | Below 8500 (lb) GVW; with 2.5 (in) Muffler Inlet |
| 1990 | Chevrolet | K2500 | — | — | 5.7L | V8 | 155.5" | N/A | Over 8500 (lb) GVW; with 2.5 (in) Muffler Inlet; with 8,500 (lb) Gross Vehicle Weight (GVW) |
| 1990 | Chevrolet | K2500 | — | — | 4.3L | V6 | 155.5" | N/A | Over 8500 (lb) GVW; with 3 (in) Muffler Inlet |
| 1990 | Chevrolet | K2500 | — | — | 5.7L | V8 | 155.5" | N/A | Below 8500 (lb) GVW; with 3 (in) Muffler Inlet |
| 1990 | Chevrolet | K2500 | — | — | 5.7L | V8 | 131.5" | N/A | Below 8500 (lb) GVW; with 3 (in) Muffler Inlet |
| 1990 | Chevrolet | K2500 | — | — | 5.7L | V8 | 155.5" | N/A | Below 8500 (lb) GVW; with 2.5 (in) Muffler Inlet |
| 1990 | Chevrolet | K3500 | — | — | 5.7L | V8 | 155.5" | N/A | with 3 (in) Muffler Inlet; with Single Catalytic Converter |
| 1990 | Chevrolet | K3500 | — | — | 5.7L | V8 | 131.5" | N/A | with 3 (in) Muffler Inlet; with Single Catalytic Converter |
| 1990 | Chevrolet | K3500 | — | — | 5.7L | V8 | 131.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1990 | Chevrolet | K3500 | — | — | 5.7L | V8 | 155.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1990 | Chevrolet | K3500 | Cab & Chassis | — | 5.7L | V8 | 159.5" | N/A | Below 15000 (lb) GVW; with Catalytic Converter; Requires 41970 At Left Hand Outlet |
| 1990 | Chevrolet | K3500 | Cab & Chassis | — | 5.7L | V8 | 135.5" | N/A | Below 15000 (lb) GVW; with Catalytic Converter; Requires 41970 At Left Hand Outlet |
| 1990 | GMC | C1500 | — | — | 5.7L | V8 | 131.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1990 | GMC | C1500 | — | — | 5.7L | V8 | 141.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1990 | GMC | C1500 | — | — | 5.7L | V8 | 117.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1990 | GMC | C1500 | — | — | 5.7L | V8 | 155.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1990 | GMC | C1500 | — | — | 5.7L | V8 | — | N/A | with 3 (in) Muffler Inlet; without Welded Converter |
| 1990 | GMC | C2500 | — | — | 5.7L | V8 | 131.5" | N/A | Below 8500 (lb) GVW; with 3 (in) Muffler Inlet |
| 1990 | GMC | C2500 | — | — | 5.7L | V8 | 131.5" | N/A | Over 8500 (lb) GVW; with 2.5 (in) Muffler Inlet; with 8,500 (lb) Gross Vehicle Weight (GVW) |
| 1990 | GMC | C2500 | — | — | 5.7L | V8 | 155.5" | N/A | Over 8500 (lb) GVW; with 2.5 (in) Muffler Inlet; with 8,500 (lb) Gross Vehicle Weight (GVW) |
| 1990 | GMC | C2500 | — | — | 5.7L | V8 | 131.5" | N/A | Below 8500 (lb) GVW; with 2.5 (in) Muffler Inlet |
| 1990 | GMC | C2500 | — | — | 4.3L | V6 | 131.5" | N/A | Over 8500 (lb) GVW; with 3 (in) Muffler Inlet |
| 1990 | GMC | C2500 | — | — | 5.7L | V8 | 155.5" | N/A | Below 8500 (lb) GVW; with 3 (in) Muffler Inlet |
| 1990 | GMC | C2500 | — | — | 4.3L | V6 | 155.5" | N/A | Over 8500 (lb) GVW; with 3 (in) Muffler Inlet |
| 1990 | GMC | C2500 | — | — | 5.7L | V8 | 141.5" | N/A | Below 8500 (lb) GVW; with 2.5 (in) Muffler Inlet |
| 1990 | GMC | C2500 | — | — | 5.7L | V8 | 141.5" | N/A | Below 8500 (lb) GVW; with 3 (in) Muffler Inlet |
| 1990 | GMC | C2500 | — | — | 5.7L | V8 | 155.5" | N/A | Below 8500 (lb) GVW; with 2.5 (in) Muffler Inlet |
| 1990 | GMC | C3500 | — | — | 5.7L | V8 | 155.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1990 | GMC | C3500 | — | — | 5.7L | V8 | 131.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1990 | GMC | C3500 | — | — | 5.7L | V8 | 131.5" | N/A | with 3 (in) Muffler Inlet |
| 1990 | GMC | C3500 | — | — | 5.7L | V8 | 155.5" | N/A | with 3 (in) Muffler Inlet |
| 1990 | GMC | C3500 | Cab & Chassis | — | 5.7L | V8 | 135.5" | N/A | Below 15000 (lb) GVW; with Catalytic Converter; Requires 41970 At Left Hand Outlet |
| 1990 | GMC | C3500 | Cab & Chassis | — | 5.7L | V8 | 159.5" | N/A | Below 15000 (lb) GVW; with Catalytic Converter; Requires 41970 At Left Hand Outlet |
| 1990 | GMC | K1500 | — | — | 5.7L | V8 | 141.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1990 | GMC | K1500 | — | — | 5.7L | V8 | 131.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1990 | GMC | K1500 | — | — | 5.7L | V8 | 117.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1990 | GMC | K1500 | — | — | 5.7L | V8 | 155.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1990 | GMC | K1500 | — | — | 5.7L | V8 | — | N/A | with 3 (in) Muffler Inlet; without Welded Converter |
| 1990 | GMC | K2500 | — | — | 5.7L | V8 | 155.5" | N/A | Over 8500 (lb) GVW; with 2.5 (in) Muffler Inlet; with 8,500 (lb) Gross Vehicle Weight (GVW) |
| 1990 | GMC | K2500 | — | — | 5.7L | V8 | 155.5" | N/A | Below 8500 (lb) GVW; with 2.5 (in) Muffler Inlet |
| 1990 | GMC | K2500 | — | — | 5.7L | V8 | 131.5" | N/A | Below 8500 (lb) GVW; with 3 (in) Muffler Inlet |
| 1990 | GMC | K2500 | — | — | 5.7L | V8 | 131.5" | N/A | Over 8500 (lb) GVW; with 2.5 (in) Muffler Inlet; with 8,500 (lb) Gross Vehicle Weight (GVW) |
| 1990 | GMC | K2500 | — | — | 5.7L | V8 | 141.5" | N/A | Below 8500 (lb) GVW; with 2.5 (in) Muffler Inlet |
| 1990 | GMC | K2500 | — | — | 5.7L | V8 | 141.5" | N/A | Below 8500 (lb) GVW; with 3 (in) Muffler Inlet |
| 1990 | GMC | K2500 | — | — | 5.7L | V8 | 155.5" | N/A | Below 8500 (lb) GVW; with 3 (in) Muffler Inlet |
| 1990 | GMC | K2500 | — | — | 4.3L | V6 | 155.5" | N/A | Over 8500 (lb) GVW; with 3 (in) Muffler Inlet |
| 1990 | GMC | K2500 | — | — | 5.7L | V8 | 131.5" | N/A | Below 8500 (lb) GVW; with 2.5 (in) Muffler Inlet |
| 1990 | GMC | K2500 | — | — | 4.3L | V6 | 131.5" | N/A | Over 8500 (lb) GVW; with 3 (in) Muffler Inlet |
| 1990 | GMC | K3500 | — | — | 5.7L | V8 | 155.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1990 | GMC | K3500 | — | — | 5.7L | V8 | 131.5" | N/A | with 3 (in) Muffler Inlet; with Single Catalytic Converter |
| 1990 | GMC | K3500 | — | — | 5.7L | V8 | 131.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1990 | GMC | K3500 | — | — | 5.7L | V8 | 155.5" | N/A | with 3 (in) Muffler Inlet; with Single Catalytic Converter |
| 1990 | GMC | K3500 | Cab & Chassis | — | 5.7L | V8 | 159.5" | N/A | Below 15000 (lb) GVW; with Catalytic Converter; Requires 41970 At Left Hand Outlet |
| 1990 | GMC | K3500 | Cab & Chassis | — | 5.7L | V8 | 135.5" | N/A | Below 15000 (lb) GVW; with Catalytic Converter; Requires 41970 At Left Hand Outlet |
| 1989 | Chevrolet | C1500 | — | — | 5.7L | V8 | 131.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1989 | Chevrolet | C1500 | — | — | 5.7L | V8 | 117.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1989 | Chevrolet | C1500 | — | — | 5.7L | V8 | 155.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1989 | Chevrolet | C1500 | — | — | 5.7L | V8 | 141.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1989 | Chevrolet | C1500 | — | — | 5.7L | V8 | — | N/A | with 3 (in) Muffler Inlet; without Welded Converter |
| 1989 | Chevrolet | C2500 | — | — | 5.7L | V8 | 131.5" | N/A | Below 8500 (lb) GVW; with 2.5 (in) Muffler Inlet |
| 1989 | Chevrolet | C2500 | — | — | 5.7L | V8 | 141.5" | N/A | Below 8500 (lb) GVW; with 2.5 (in) Muffler Inlet |
| 1989 | Chevrolet | C2500 | — | — | 5.7L | V8 | 131.5" | N/A | Below 8500 (lb) GVW; with 3 (in) Muffler Inlet |
| 1989 | Chevrolet | C2500 | — | — | 5.7L | V8 | 131.5" | N/A | Over 8500 (lb) GVW; with 2.5 (in) Muffler Inlet; with 8,500 (lb) Gross Vehicle Weight (GVW) |
| 1989 | Chevrolet | C2500 | — | — | 5.7L | V8 | 155.5" | N/A | Below 8500 (lb) GVW; with 3 (in) Muffler Inlet |
| 1989 | Chevrolet | C2500 | — | — | 5.7L | V8 | 141.5" | N/A | Below 8500 (lb) GVW; with 3 (in) Muffler Inlet |
| 1989 | Chevrolet | C2500 | — | — | 5.7L | V8 | 155.5" | N/A | Over 8500 (lb) GVW; with 2.5 (in) Muffler Inlet; with 8,500 (lb) Gross Vehicle Weight (GVW) |
| 1989 | Chevrolet | C2500 | — | — | 5.7L | V8 | 155.5" | N/A | Below 8500 (lb) GVW; with 2.5 (in) Muffler Inlet |
| 1989 | Chevrolet | C3500 | — | — | 5.7L | V8 | 155.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1989 | Chevrolet | C3500 | — | — | 5.7L | V8 | 155.5" | N/A | with Dual Catalytic Converters |
| 1989 | Chevrolet | C3500 | — | — | 5.7L | V8 | 131.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1989 | Chevrolet | C3500 | — | — | 5.7L | V8 | 131.5" | N/A | with Dual Catalytic Converters |
| 1989 | Chevrolet | K1500 | — | — | 5.7L | V8 | 141.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1989 | Chevrolet | K1500 | — | — | 5.7L | V8 | 131.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1989 | Chevrolet | K1500 | — | — | 5.7L | V8 | 155.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1989 | Chevrolet | K1500 | — | — | 5.7L | V8 | 117.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1989 | Chevrolet | K1500 | — | — | 5.7L | V8 | — | N/A | with 3 (in) Muffler Inlet; without Welded Converter |
| 1989 | Chevrolet | K2500 | — | — | 5.7L | V8 | 131.5" | N/A | Below 8500 (lb) GVW; with 2.5 (in) Muffler Inlet |
| 1989 | Chevrolet | K2500 | — | — | 5.7L | V8 | 141.5" | N/A | Below 8500 (lb) GVW; with 3 (in) Muffler Inlet |
| 1989 | Chevrolet | K2500 | — | — | 5.7L | V8 | 131.5" | N/A | Over 8500 (lb) GVW; with 2.5 (in) Muffler Inlet; with 8,500 (lb) Gross Vehicle Weight (GVW) |
| 1989 | Chevrolet | K2500 | — | — | 5.7L | V8 | 141.5" | N/A | Below 8500 (lb) GVW; with 2.5 (in) Muffler Inlet |
| 1989 | Chevrolet | K2500 | — | — | 5.7L | V8 | 155.5" | N/A | Over 8500 (lb) GVW; with 2.5 (in) Muffler Inlet; with 8,500 (lb) Gross Vehicle Weight (GVW) |
| 1989 | Chevrolet | K2500 | — | — | 5.7L | V8 | 155.5" | N/A | Below 8500 (lb) GVW; with 3 (in) Muffler Inlet |
| 1989 | Chevrolet | K2500 | — | — | 5.7L | V8 | 131.5" | N/A | Below 8500 (lb) GVW; with 3 (in) Muffler Inlet |
| 1989 | Chevrolet | K2500 | — | — | 5.7L | V8 | 155.5" | N/A | Below 8500 (lb) GVW; with 2.5 (in) Muffler Inlet |
| 1989 | Chevrolet | K3500 | — | — | 5.7L | V8 | — | N/A | with 3 (in) Muffler Inlet; with Single Catalytic Converter |
| 1989 | Chevrolet | K3500 | — | — | 5.7L | V8 | — | N/A | with 2.5 (in) Muffler Inlet |
| 1989 | Chevrolet | K3500 | — | — | 5.7L | V8 | — | N/A | with Dual Catalytic Converters |
| 1989 | GMC | C1500 | — | — | 5.7L | V8 | 131.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1989 | GMC | C1500 | — | — | 5.7L | V8 | 141.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1989 | GMC | C1500 | — | — | 5.7L | V8 | 117.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1989 | GMC | C1500 | — | — | 5.7L | V8 | 155.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1989 | GMC | C1500 | — | — | 5.7L | V8 | — | N/A | with 3 (in) Muffler Inlet; without Welded Converter |
| 1989 | GMC | C2500 | — | — | 5.7L | V8 | 131.5" | N/A | Below 8500 (lb) GVW; with 3 (in) Muffler Inlet |
| 1989 | GMC | C2500 | — | — | 5.7L | V8 | 131.5" | N/A | Over 8500 (lb) GVW; with 2.5 (in) Muffler Inlet; with 8,500 (lb) Gross Vehicle Weight (GVW) |
| 1989 | GMC | C2500 | — | — | 5.7L | V8 | 155.5" | N/A | Over 8500 (lb) GVW; with 2.5 (in) Muffler Inlet; with 8,500 (lb) Gross Vehicle Weight (GVW) |
| 1989 | GMC | C2500 | — | — | 5.7L | V8 | 131.5" | N/A | Below 8500 (lb) GVW; with 2.5 (in) Muffler Inlet |
| 1989 | GMC | C2500 | — | — | 5.7L | V8 | 155.5" | N/A | Below 8500 (lb) GVW; with 3 (in) Muffler Inlet |
| 1989 | GMC | C2500 | — | — | 5.7L | V8 | 141.5" | N/A | Below 8500 (lb) GVW; with 2.5 (in) Muffler Inlet |
| 1989 | GMC | C2500 | — | — | 5.7L | V8 | 141.5" | N/A | Below 8500 (lb) GVW; with 3 (in) Muffler Inlet |
| 1989 | GMC | C2500 | — | — | 5.7L | V8 | 155.5" | N/A | Below 8500 (lb) GVW; with 2.5 (in) Muffler Inlet |
| 1989 | GMC | C3500 | — | — | 5.7L | V8 | 131.5" | N/A | with Dual Catalytic Converters |
| 1989 | GMC | C3500 | — | — | 5.7L | V8 | 155.5" | N/A | with Dual Catalytic Converters |
| 1989 | GMC | C3500 | — | — | 5.7L | V8 | — | N/A | with 2.5 (in) Muffler Inlet |
| 1989 | GMC | K1500 | — | — | 5.7L | V8 | 141.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1989 | GMC | K1500 | — | — | 5.7L | V8 | 131.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1989 | GMC | K1500 | — | — | 5.7L | V8 | 117.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1989 | GMC | K1500 | — | — | 5.7L | V8 | 155.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1989 | GMC | K1500 | — | — | 5.7L | V8 | — | N/A | with 3 (in) Muffler Inlet; without Welded Converter |
| 1989 | GMC | K2500 | — | — | 5.7L | V8 | 155.5" | N/A | Over 8500 (lb) GVW; with 2.5 (in) Muffler Inlet; with 8,500 (lb) Gross Vehicle Weight (GVW) |
| 1989 | GMC | K2500 | — | — | 5.7L | V8 | 155.5" | N/A | Below 8500 (lb) GVW; with 2.5 (in) Muffler Inlet |
| 1989 | GMC | K2500 | — | — | 5.7L | V8 | 131.5" | N/A | Below 8500 (lb) GVW; with 3 (in) Muffler Inlet |
| 1989 | GMC | K2500 | — | — | 5.7L | V8 | 131.5" | N/A | Over 8500 (lb) GVW; with 2.5 (in) Muffler Inlet; with 8,500 (lb) Gross Vehicle Weight (GVW) |
| 1989 | GMC | K2500 | — | — | 5.7L | V8 | 141.5" | N/A | Below 8500 (lb) GVW; with 2.5 (in) Muffler Inlet |
| 1989 | GMC | K2500 | — | — | 5.7L | V8 | 141.5" | N/A | Below 8500 (lb) GVW; with 3 (in) Muffler Inlet |
| 1989 | GMC | K2500 | — | — | 5.7L | V8 | 155.5" | N/A | Below 8500 (lb) GVW; with 3 (in) Muffler Inlet |
| 1989 | GMC | K2500 | — | — | 5.7L | V8 | 131.5" | N/A | Below 8500 (lb) GVW; with 2.5 (in) Muffler Inlet |
| 1989 | GMC | K3500 | — | — | 5.7L | V8 | — | N/A | with 3 (in) Muffler Inlet; with Single Catalytic Converter |
| 1989 | GMC | K3500 | — | — | 5.7L | V8 | — | N/A | with Dual Catalytic Converters |
| 1989 | GMC | K3500 | — | — | 5.7L | V8 | — | N/A | with 2.5 (in) Muffler Inlet |
| 1988 | Chevrolet | C1500 | — | — | 5.7L | V8 | 131.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1988 | Chevrolet | C1500 | — | — | 5.7L | V8 | 117.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1988 | Chevrolet | C1500 | — | — | 5.7L | V8 | 155.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1988 | Chevrolet | C1500 | — | — | 5.7L | V8 | — | N/A | with 3 (in) Muffler Inlet; without Welded Converter |
| 1988 | Chevrolet | C2500 | — | — | 5.7L | V8 | 131.5" | N/A | Below 8500 (lb) GVW; with 2.5 (in) Muffler Inlet |
| 1988 | Chevrolet | C2500 | — | — | 5.7L | V8 | 131.5" | N/A | Below 8500 (lb) GVW; with 3 (in) Muffler Inlet |
| 1988 | Chevrolet | C2500 | — | — | 5.7L | V8 | 131.5" | N/A | Over 8500 (lb) GVW; with 2.5 (in) Muffler Inlet; with 8,500 (lb) Gross Vehicle Weight (GVW) |
| 1988 | Chevrolet | C2500 | — | — | 5.7L | V8 | 155.5" | N/A | Below 8500 (lb) GVW; with 3 (in) Muffler Inlet |
| 1988 | Chevrolet | C2500 | — | — | 5.7L | V8 | 155.5" | N/A | Over 8500 (lb) GVW; with 2.5 (in) Muffler Inlet; with 8,500 (lb) Gross Vehicle Weight (GVW) |
| 1988 | Chevrolet | C2500 | — | — | 5.7L | V8 | 155.5" | N/A | Below 8500 (lb) GVW; with 2.5 (in) Muffler Inlet |
| 1988 | Chevrolet | C3500 | — | — | 5.7L | V8 | 155.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1988 | Chevrolet | C3500 | — | — | 5.7L | V8 | 155.5" | N/A | with Dual Catalytic Converters |
| 1988 | Chevrolet | C3500 | — | — | 5.7L | V8 | 131.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1988 | Chevrolet | C3500 | — | — | 5.7L | V8 | 131.5" | N/A | with Dual Catalytic Converters |
| 1988 | Chevrolet | K1500 | — | — | 5.7L | V8 | 131.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1988 | Chevrolet | K1500 | — | — | 5.7L | V8 | 155.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1988 | Chevrolet | K1500 | — | — | 5.7L | V8 | 117.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1988 | Chevrolet | K1500 | — | — | 5.7L | V8 | — | N/A | with 3 (in) Muffler Inlet; without Welded Converter |
| 1988 | Chevrolet | K2500 | — | — | 5.7L | V8 | 131.5" | N/A | Below 8500 (lb) GVW; with 2.5 (in) Muffler Inlet |
| 1988 | Chevrolet | K2500 | — | — | 5.7L | V8 | 131.5" | N/A | Over 8500 (lb) GVW; with 2.5 (in) Muffler Inlet; with 8,500 (lb) Gross Vehicle Weight (GVW) |
| 1988 | Chevrolet | K2500 | — | — | 5.7L | V8 | 155.5" | N/A | Over 8500 (lb) GVW; with 2.5 (in) Muffler Inlet; with 8,500 (lb) Gross Vehicle Weight (GVW) |
| 1988 | Chevrolet | K2500 | — | — | 5.7L | V8 | 155.5" | N/A | Below 8500 (lb) GVW; with 3 (in) Muffler Inlet |
| 1988 | Chevrolet | K2500 | — | — | 5.7L | V8 | 131.5" | N/A | Below 8500 (lb) GVW; with 3 (in) Muffler Inlet |
| 1988 | Chevrolet | K2500 | — | — | 5.7L | V8 | 155.5" | N/A | Below 8500 (lb) GVW; with 2.5 (in) Muffler Inlet |
| 1988 | Chevrolet | K3500 | — | — | 5.7L | V8 | — | N/A | with 3 (in) Muffler Inlet; with Single Catalytic Converter |
| 1988 | Chevrolet | K3500 | — | — | 5.7L | V8 | — | N/A | with 2.5 (in) Muffler Inlet |
| 1988 | Chevrolet | K3500 | — | — | 5.7L | V8 | — | N/A | with Dual Catalytic Converters |
| 1988 | GMC | C1500 | — | — | 5.7L | V8 | 131.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1988 | GMC | C1500 | — | — | 5.7L | V8 | 117.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1988 | GMC | C1500 | — | — | 5.7L | V8 | 155.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1988 | GMC | C1500 | — | — | 5.7L | V8 | — | N/A | with 3 (in) Muffler Inlet; without Welded Converter |
| 1988 | GMC | C2500 | — | — | 5.7L | V8 | 131.5" | N/A | Below 8500 (lb) GVW; with 3 (in) Muffler Inlet |
| 1988 | GMC | C2500 | — | — | 5.7L | V8 | 131.5" | N/A | Over 8500 (lb) GVW; with 2.5 (in) Muffler Inlet; with 8,500 (lb) Gross Vehicle Weight (GVW) |
| 1988 | GMC | C2500 | — | — | 5.7L | V8 | 155.5" | N/A | Over 8500 (lb) GVW; with 2.5 (in) Muffler Inlet; with 8,500 (lb) Gross Vehicle Weight (GVW) |
| 1988 | GMC | C2500 | — | — | 5.7L | V8 | 131.5" | N/A | Below 8500 (lb) GVW; with 2.5 (in) Muffler Inlet |
| 1988 | GMC | C2500 | — | — | 5.7L | V8 | 155.5" | N/A | Below 8500 (lb) GVW; with 3 (in) Muffler Inlet |
| 1988 | GMC | C2500 | — | — | 5.7L | V8 | 155.5" | N/A | Below 8500 (lb) GVW; with 2.5 (in) Muffler Inlet |
| 1988 | GMC | C3500 | — | — | 5.7L | V8 | 131.5" | N/A | with Dual Catalytic Converters |
| 1988 | GMC | C3500 | — | — | 5.7L | V8 | 155.5" | N/A | with Dual Catalytic Converters |
| 1988 | GMC | C3500 | — | — | 5.7L | V8 | — | N/A | with 2.5 (in) Muffler Inlet |
| 1988 | GMC | K1500 | — | — | 5.7L | V8 | 131.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1988 | GMC | K1500 | — | — | 5.7L | V8 | 117.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1988 | GMC | K1500 | — | — | 5.7L | V8 | 155.5" | N/A | with 2.5 (in) Muffler Inlet |
| 1988 | GMC | K1500 | — | — | 5.7L | V8 | — | N/A | with 3 (in) Muffler Inlet; without Welded Converter |
| 1988 | GMC | K2500 | — | — | 5.7L | V8 | 155.5" | N/A | Over 8500 (lb) GVW; with 2.5 (in) Muffler Inlet; with 8,500 (lb) Gross Vehicle Weight (GVW) |
| 1988 | GMC | K2500 | — | — | 5.7L | V8 | 155.5" | N/A | Below 8500 (lb) GVW; with 2.5 (in) Muffler Inlet |
| 1988 | GMC | K2500 | — | — | 5.7L | V8 | 131.5" | N/A | Below 8500 (lb) GVW; with 3 (in) Muffler Inlet |
| 1988 | GMC | K2500 | — | — | 5.7L | V8 | 131.5" | N/A | Over 8500 (lb) GVW; with 2.5 (in) Muffler Inlet; with 8,500 (lb) Gross Vehicle Weight (GVW) |
| 1988 | GMC | K2500 | — | — | 5.7L | V8 | 155.5" | N/A | Below 8500 (lb) GVW; with 3 (in) Muffler Inlet |
| 1988 | GMC | K2500 | — | — | 5.7L | V8 | 131.5" | N/A | Below 8500 (lb) GVW; with 2.5 (in) Muffler Inlet |
| 1988 | GMC | K3500 | — | — | 5.7L | V8 | — | N/A | with 3 (in) Muffler Inlet; with Single Catalytic Converter |
| 1988 | GMC | K3500 | — | — | 5.7L | V8 | — | N/A | with Dual Catalytic Converters |
| 1988 | GMC | K3500 | — | — | 5.7L | V8 | — | N/A | with 2.5 (in) Muffler Inlet |
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