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WalkerPart #: 21533
Walker 21533 Exhaust Muffler
90 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
Quiet-Flow SS
Fitment: Chevrolet and GMC, Sierra 2500, Sierra 2500 HD, Sierra 3500, Sierra 3500 Classic, Silverado 2500, Silverado 2500 HD, Silverado 3500, and Silverado 3500 Classic
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Overview of Walker Quiet-Flow SS Exhaust Muffler 21533
The Walker Quiet-Flow SS Exhaust Muffler 21533 is designed specifically for Chevrolet and GMC heavy-duty trucks. Engineered to meet the demands of Sierra 2500, Sierra 3500, Silverado 2500, and Silverado 3500 models, this muffler offers a durable stainless steel construction with an aluminized finish for corrosion resistance.
- Specific fit for Chevrolet and GMC Sierra 2500, 2500 HD, 3500, 3500 Classic, Silverado 2500, 2500 HD, 3500, and 3500 Classic
- Oval-shaped muffler body with dimensions: 24" length, 9" width, and 7" height
- Stainless steel body material with aluminized finish for enhanced durability
- Combination muffler type with offset inlet and outlet pipe connections
- Inlet diameter of 2.5 inches and outlet diameter of 3 inches, with dual inlets and single outlet configuration
Quiet-Flow SS Product Line Details
The Quiet-Flow SS line by Walker focuses on providing exhaust mufflers that combine sound reduction with corrosion resistance. This product line utilizes stainless steel construction to extend service life while maintaining effective noise control. The 21533 muffler exemplifies these qualities, tailored for specific heavy-duty Chevrolet and GMC truck models.
Product Features and Specifications
The Walker 21533 muffler features an oval body shape measuring 24 inches in length, 9 inches in width, and 7 inches in height. It is constructed from stainless steel with an aluminized finish to resist rust and corrosion. The muffler includes two offset inlets, each with a 2.5-inch inside diameter pipe connection, spaced 1.625 inches apart, and a single offset outlet with a 3-inch inside diameter pipe connection. This combination muffler design is not reversible or tunable, ensuring a precise fit and function for the specified vehicle models.
Applications and Problem Solving
- Replacement muffler for exhaust noise reduction on Chevrolet and GMC heavy-duty trucks
- Addresses corrosion and rust issues common in exhaust components
- Restores proper exhaust flow and reduces backpressure for improved engine performance
- Designed to fit specific Sierra and Silverado 2500 and 3500 series trucks for accurate installation
- Helps maintain emissions compliance by ensuring exhaust system integrity
Installation Notes and Tips
This muffler is designed for specific fitment on Chevrolet and GMC Sierra and Silverado 2500 and 3500 series trucks. Installation requires matching the 2.5-inch inlet and 3-inch outlet pipe connections with the vehicle’s exhaust system. The offset inlet and outlet configuration should be aligned carefully to ensure proper fit. This part is not reversible or tunable, so correct orientation is necessary. Professional installation is recommended to ensure secure mounting and optimal exhaust performance.
Quality Assurance and Warranty
Walker’s Quiet-Flow SS mufflers are manufactured with high-quality stainless steel and aluminized finishes to provide long-lasting durability. While specific warranty details are not provided here, Walker products typically meet industry standards for performance and reliability. The 21533 muffler is engineered to maintain exhaust system integrity and withstand harsh operating conditions common to heavy-duty Chevrolet and GMC trucks.
| Brand | Walker |
|---|---|
| Part Number | 21533 |
| Position | Quiet-Flow SS |
| Universal Or Specific Fit | Specific |
| Shape | Oval |
| Grade Type | Regular |
| Inlet Inside Diameter | 2.5 |
| Body Width | 9 |
| Outlet Inside Diameter | 3 |
| Outlet Quantity | 1 |
| Reversible | No |
| Tunable | No |
| Overall Length | 28 |
| Body Height | 7 |
| Body Length | 24 |
| Body Material | Stainless steel |
| Finish | Aluminized |
| Inlet 1 Inside Diameter | 2.5 |
| Inlet 1 Type | Pipe connection |
| Inlet 2 Inside Diameter | 2.5 |
| Inlet 2 Type | Pipe connection |
| Inlet Configuration | Offset |
| Inlet Offset | 1.625 |
| Inlet Quantity | 2 |
| Inlet Type | Pipe connection |
| Muffler Type | Combination |
| Outlet 1 Inside Diameter | 3 |
| Outlet 1 Type | Pipe connection |
| Outlet Configuration | Offset |
| Outlet Type | Pipe connection |
This part fits 90 vehicles. Search below:
| Year | Make | Model | Body Type | Liters | Cylinders | Wheel Base | Position | Notes |
|---|---|---|---|---|---|---|---|---|
| 2007 | Chevrolet | Silverado 3500 Classic | Cab & Chassis | 8.1L | V8 | 133.0" | N/A | Except Heavy Duty; Premium; with 2.5 (in) Muffler Inlet; Limited Lifetime Warranty; with Single Rear Wheels (SRW); If welded assembly, replace all required parts; with Small Diameter Muffler; Use Reducer Bushing 41974 to connect with OE Converter Pipe; Quiet-Flow SS |
| 2007 | Chevrolet | Silverado 3500 Classic | Cab & Chassis | 6.0L | V8 | 133.0" | N/A | Except Heavy Duty; Premium; with 2.5 (in) Muffler Inlet; Limited Lifetime Warranty; with Single Rear Wheels (SRW); If welded assembly, replace all required parts; with Small Diameter Muffler; Use Reducer Bushing 41974 to connect with OE Converter Pipe; Quiet-Flow SS |
| 2007 | GMC | Sierra 3500 Classic | Cab & Chassis | 8.1L | V8 | 133.0" | N/A | Except Heavy Duty; Premium; with 2.5 (in) Muffler Inlet; Limited Lifetime Warranty; with Single Rear Wheels (SRW); If welded assembly, replace all required parts; with Small Diameter Muffler; Use Reducer Bushing 41974 to connect with OE Converter Pipe; Quiet-Flow SS |
| 2007 | GMC | Sierra 3500 Classic | Cab & Chassis | 6.0L | V8 | 133.0" | N/A | Except Heavy Duty; Premium; with 2.5 (in) Muffler Inlet; Limited Lifetime Warranty; with Single Rear Wheels (SRW); If welded assembly, replace all required parts; with Small Diameter Muffler; Use Reducer Bushing 41974 to connect with OE Converter Pipe; Quiet-Flow SS |
| 2006 | Chevrolet | Silverado 2500 HD | 6.0L | V8 | 133.0" | N/A | Premium; with 2.5 (in) Muffler Inlet; with Federal Emission System; except Low Emission Vehicle (LEV); Limited Lifetime Warranty; If welded assembly, replace all required parts; with Small Diameter Muffler; Use Reducer Bushing 41974 to connect with OE Converter Pipe; Quiet-Flow SS | |
| 2006 | Chevrolet | Silverado 2500 HD | 6.0L | V8 | 143.5" | N/A | Premium; with 2.5 (in) Muffler Inlet; with Federal Emission System; except Low Emission Vehicle (LEV); Limited Lifetime Warranty; If welded assembly, replace all required parts; with Small Diameter Muffler; Use Reducer Bushing 41974 to connect with OE Converter Pipe; Quiet-Flow SS | |
| 2006 | Chevrolet | Silverado 2500 HD | 6.0L | V8 | 153.0" | N/A | Premium; with 2.5 (in) Muffler Inlet; with Federal Emission System; except Low Emission Vehicle (LEV); Limited Lifetime Warranty; If welded assembly, replace all required parts; with Small Diameter Muffler; Use Reducer Bushing 41974 to connect with OE Converter Pipe; Quiet-Flow SS | |
| 2006 | Chevrolet | Silverado 2500 HD | 8.1L | V8 | 133.0" | N/A | Premium; with 2.5 (in) Muffler Inlet; with Federal Emission System; except Low Emission Vehicle (LEV); Limited Lifetime Warranty; If welded assembly, replace all required parts; with Small Diameter Muffler; Use Reducer Bushing 41974 to connect with OE Converter Pipe; Quiet-Flow SS | |
| 2006 | Chevrolet | Silverado 2500 HD | 8.1L | V8 | 143.5" | N/A | Premium; with 2.5 (in) Muffler Inlet; with Federal Emission System; except Low Emission Vehicle (LEV); Limited Lifetime Warranty; If welded assembly, replace all required parts; with Small Diameter Muffler; Use Reducer Bushing 41974 to connect with OE Converter Pipe; Quiet-Flow SS | |
| 2006 | Chevrolet | Silverado 2500 HD | 8.1L | V8 | 153.0" | N/A | Premium; with 2.5 (in) Muffler Inlet; with Federal Emission System; except Low Emission Vehicle (LEV); Limited Lifetime Warranty; If welded assembly, replace all required parts; with Small Diameter Muffler; Use Reducer Bushing 41974 to connect with OE Converter Pipe; Quiet-Flow SS | |
| 2006 | Chevrolet | Silverado 3500 | Crew Cab Pickup | 8.1L | V8 | 133.0" | N/A | Premium; with 2.5 (in) Muffler Inlet; with 9900 (lb) Gross Vehicle Weight (GVW); with Federal Emission System; except Low Emission Vehicle (LEV); Limited Lifetime Warranty; If welded assembly, replace all required parts; with Small Diameter Muffler; Use Reducer Bushing 41974 to connect with OE Converter Pipe; Quiet-Flow SS |
| 2006 | Chevrolet | Silverado 3500 | Extended Cab Pickup | 6.0L | V8 | 133.0" | N/A | Premium; with 2.5 (in) Muffler Inlet; with 9900 (lb) Gross Vehicle Weight (GVW); with Federal Emission System; except Low Emission Vehicle (LEV); Limited Lifetime Warranty; If welded assembly, replace all required parts; with Small Diameter Muffler; Use Reducer Bushing 41974 to connect with OE Converter Pipe; Quiet-Flow SS |
| 2006 | Chevrolet | Silverado 3500 | Standard Cab Pickup | 8.1L | V8 | 133.0" | N/A | Premium; with 2.5 (in) Muffler Inlet; with 9900 (lb) Gross Vehicle Weight (GVW); with Federal Emission System; except Low Emission Vehicle (LEV); Limited Lifetime Warranty; If welded assembly, replace all required parts; with Small Diameter Muffler; Use Reducer Bushing 41974 to connect with OE Converter Pipe; Quiet-Flow SS |
| 2006 | Chevrolet | Silverado 3500 | Standard Cab Pickup | 6.0L | V8 | 133.0" | N/A | Premium; with 2.5 (in) Muffler Inlet; with 9900 (lb) Gross Vehicle Weight (GVW); with Federal Emission System; except Low Emission Vehicle (LEV); Limited Lifetime Warranty; If welded assembly, replace all required parts; with Small Diameter Muffler; Use Reducer Bushing 41974 to connect with OE Converter Pipe; Quiet-Flow SS |
| 2006 | Chevrolet | Silverado 3500 | Crew Cab Pickup | 6.0L | V8 | 133.0" | N/A | Premium; with 2.5 (in) Muffler Inlet; with 9900 (lb) Gross Vehicle Weight (GVW); with Federal Emission System; except Low Emission Vehicle (LEV); Limited Lifetime Warranty; If welded assembly, replace all required parts; with Small Diameter Muffler; Use Reducer Bushing 41974 to connect with OE Converter Pipe; Quiet-Flow SS |
| 2006 | Chevrolet | Silverado 3500 | Extended Cab Pickup | 8.1L | V8 | 133.0" | N/A | Premium; with 2.5 (in) Muffler Inlet; with 9900 (lb) Gross Vehicle Weight (GVW); with Federal Emission System; except Low Emission Vehicle (LEV); Limited Lifetime Warranty; If welded assembly, replace all required parts; with Small Diameter Muffler; Use Reducer Bushing 41974 to connect with OE Converter Pipe; Quiet-Flow SS |
| 2006 | GMC | Sierra 2500 HD | 6.0L | V8 | 153.0" | N/A | Premium; with 2.5 (in) Muffler Inlet; with Federal Emission System; except Low Emission Vehicle (LEV); Limited Lifetime Warranty; If welded assembly, replace all required parts; with Small Diameter Muffler; Use Reducer Bushing 41974 to connect with OE Converter Pipe; Quiet-Flow SS | |
| 2006 | GMC | Sierra 2500 HD | 6.0L | V8 | 133.0" | N/A | Premium; with 2.5 (in) Muffler Inlet; with Federal Emission System; except Low Emission Vehicle (LEV); Limited Lifetime Warranty; If welded assembly, replace all required parts; with Small Diameter Muffler; Use Reducer Bushing 41974 to connect with OE Converter Pipe; Quiet-Flow SS | |
| 2006 | GMC | Sierra 2500 HD | 6.0L | V8 | 143.5" | N/A | Premium; with 2.5 (in) Muffler Inlet; with Federal Emission System; except Low Emission Vehicle (LEV); Limited Lifetime Warranty; If welded assembly, replace all required parts; with Small Diameter Muffler; Use Reducer Bushing 41974 to connect with OE Converter Pipe; Quiet-Flow SS | |
| 2006 | GMC | Sierra 2500 HD | 8.1L | V8 | 133.0" | N/A | Premium; with 2.5 (in) Muffler Inlet; with Federal Emission System; except Low Emission Vehicle (LEV); Limited Lifetime Warranty; If welded assembly, replace all required parts; with Small Diameter Muffler; Use Reducer Bushing 41974 to connect with OE Converter Pipe; Quiet-Flow SS | |
| 2006 | GMC | Sierra 2500 HD | 8.1L | V8 | 143.5" | N/A | Premium; with 2.5 (in) Muffler Inlet; with Federal Emission System; except Low Emission Vehicle (LEV); Limited Lifetime Warranty; If welded assembly, replace all required parts; with Small Diameter Muffler; Use Reducer Bushing 41974 to connect with OE Converter Pipe; Quiet-Flow SS | |
| 2006 | GMC | Sierra 2500 HD | 8.1L | V8 | 153.0" | N/A | Premium; with 2.5 (in) Muffler Inlet; with Federal Emission System; except Low Emission Vehicle (LEV); Limited Lifetime Warranty; If welded assembly, replace all required parts; with Small Diameter Muffler; Use Reducer Bushing 41974 to connect with OE Converter Pipe; Quiet-Flow SS | |
| 2006 | GMC | Sierra 3500 | Standard Cab Pickup | 8.1L | V8 | 133.0" | N/A | Premium; with 2.5 (in) Muffler Inlet; with 9900 (lb) Gross Vehicle Weight (GVW); with Federal Emission System; except Low Emission Vehicle (LEV); Limited Lifetime Warranty; If welded assembly, replace all required parts; with Small Diameter Muffler; Use Reducer Bushing 41974 to connect with OE Converter Pipe; Quiet-Flow SS |
| 2006 | GMC | Sierra 3500 | Extended Cab Pickup | 8.1L | V8 | 133.0" | N/A | Premium; with 2.5 (in) Muffler Inlet; with 9900 (lb) Gross Vehicle Weight (GVW); with Federal Emission System; except Low Emission Vehicle (LEV); Limited Lifetime Warranty; If welded assembly, replace all required parts; with Small Diameter Muffler; Use Reducer Bushing 41974 to connect with OE Converter Pipe; Quiet-Flow SS |
| 2006 | GMC | Sierra 3500 | Crew Cab Pickup | 6.0L | V8 | 133.0" | N/A | Premium; with 2.5 (in) Muffler Inlet; with 9900 (lb) Gross Vehicle Weight (GVW); with Federal Emission System; except Low Emission Vehicle (LEV); Limited Lifetime Warranty; If welded assembly, replace all required parts; with Small Diameter Muffler; Use Reducer Bushing 41974 to connect with OE Converter Pipe; Quiet-Flow SS |
| 2006 | GMC | Sierra 3500 | Crew Cab Pickup | 8.1L | V8 | 133.0" | N/A | Premium; with 2.5 (in) Muffler Inlet; with 9900 (lb) Gross Vehicle Weight (GVW); with Federal Emission System; except Low Emission Vehicle (LEV); Limited Lifetime Warranty; If welded assembly, replace all required parts; with Small Diameter Muffler; Use Reducer Bushing 41974 to connect with OE Converter Pipe; Quiet-Flow SS |
| 2006 | GMC | Sierra 3500 | Standard Cab Pickup | 6.0L | V8 | 133.0" | N/A | Premium; with 2.5 (in) Muffler Inlet; with 9900 (lb) Gross Vehicle Weight (GVW); with Federal Emission System; except Low Emission Vehicle (LEV); Limited Lifetime Warranty; If welded assembly, replace all required parts; with Small Diameter Muffler; Use Reducer Bushing 41974 to connect with OE Converter Pipe; Quiet-Flow SS |
| 2006 | GMC | Sierra 3500 | Extended Cab Pickup | 6.0L | V8 | 133.0" | N/A | Premium; with 2.5 (in) Muffler Inlet; with 9900 (lb) Gross Vehicle Weight (GVW); with Federal Emission System; except Low Emission Vehicle (LEV); Limited Lifetime Warranty; If welded assembly, replace all required parts; with Small Diameter Muffler; Use Reducer Bushing 41974 to connect with OE Converter Pipe; Quiet-Flow SS |
| 2005 | Chevrolet | Silverado 2500 HD | 6.0L | V8 | 133.0" | N/A | Premium; with 2.5 (in) Muffler Inlet; with Federal Emission System; except Low Emission Vehicle (LEV); Limited Lifetime Warranty; If welded assembly, replace all required parts; with Small Diameter Muffler; Use Reducer Bushing 41974 to connect with OE Converter Pipe; Quiet-Flow SS | |
| 2005 | Chevrolet | Silverado 2500 HD | 6.0L | V8 | 143.5" | N/A | Premium; with 2.5 (in) Muffler Inlet; with Federal Emission System; except Low Emission Vehicle (LEV); Limited Lifetime Warranty; If welded assembly, replace all required parts; with Small Diameter Muffler; Use Reducer Bushing 41974 to connect with OE Converter Pipe; Quiet-Flow SS | |
| 2005 | Chevrolet | Silverado 2500 HD | 6.0L | V8 | 153.0" | N/A | Premium; with 2.5 (in) Muffler Inlet; with Federal Emission System; except Low Emission Vehicle (LEV); Limited Lifetime Warranty; If welded assembly, replace all required parts; with Small Diameter Muffler; Use Reducer Bushing 41974 to connect with OE Converter Pipe; Quiet-Flow SS | |
| 2005 | Chevrolet | Silverado 2500 HD | 8.1L | V8 | 133.0" | N/A | Premium; with 2.5 (in) Muffler Inlet; with Federal Emission System; except Low Emission Vehicle (LEV); Limited Lifetime Warranty; If welded assembly, replace all required parts; with Small Diameter Muffler; Use Reducer Bushing 41974 to connect with OE Converter Pipe; Quiet-Flow SS | |
| 2005 | Chevrolet | Silverado 2500 HD | 8.1L | V8 | 143.5" | N/A | Premium; with 2.5 (in) Muffler Inlet; with Federal Emission System; except Low Emission Vehicle (LEV); Limited Lifetime Warranty; If welded assembly, replace all required parts; with Small Diameter Muffler; Use Reducer Bushing 41974 to connect with OE Converter Pipe; Quiet-Flow SS | |
| 2005 | Chevrolet | Silverado 2500 HD | 8.1L | V8 | 153.0" | N/A | Premium; with 2.5 (in) Muffler Inlet; with Federal Emission System; except Low Emission Vehicle (LEV); Limited Lifetime Warranty; If welded assembly, replace all required parts; with Small Diameter Muffler; Use Reducer Bushing 41974 to connect with OE Converter Pipe; Quiet-Flow SS | |
| 2005 | GMC | Sierra 2500 HD | 6.0L | V8 | 153.0" | N/A | Premium; with 2.5 (in) Muffler Inlet; with Federal Emission System; except Low Emission Vehicle (LEV); Limited Lifetime Warranty; If welded assembly, replace all required parts; with Small Diameter Muffler; Use Reducer Bushing 41974 to connect with OE Converter Pipe; Quiet-Flow SS | |
| 2005 | GMC | Sierra 2500 HD | 6.0L | V8 | 133.0" | N/A | Premium; with 2.5 (in) Muffler Inlet; with Federal Emission System; except Low Emission Vehicle (LEV); Limited Lifetime Warranty; If welded assembly, replace all required parts; with Small Diameter Muffler; Use Reducer Bushing 41974 to connect with OE Converter Pipe; Quiet-Flow SS | |
| 2005 | GMC | Sierra 2500 HD | 6.0L | V8 | 143.5" | N/A | Premium; with 2.5 (in) Muffler Inlet; with Federal Emission System; except Low Emission Vehicle (LEV); Limited Lifetime Warranty; If welded assembly, replace all required parts; with Small Diameter Muffler; Use Reducer Bushing 41974 to connect with OE Converter Pipe; Quiet-Flow SS | |
| 2005 | GMC | Sierra 2500 HD | 8.1L | V8 | 133.0" | N/A | Premium; with 2.5 (in) Muffler Inlet; with Federal Emission System; except Low Emission Vehicle (LEV); Limited Lifetime Warranty; If welded assembly, replace all required parts; with Small Diameter Muffler; Use Reducer Bushing 41974 to connect with OE Converter Pipe; Quiet-Flow SS | |
| 2005 | GMC | Sierra 2500 HD | 8.1L | V8 | 143.5" | N/A | Premium; with 2.5 (in) Muffler Inlet; with Federal Emission System; except Low Emission Vehicle (LEV); Limited Lifetime Warranty; If welded assembly, replace all required parts; with Small Diameter Muffler; Use Reducer Bushing 41974 to connect with OE Converter Pipe; Quiet-Flow SS | |
| 2005 | GMC | Sierra 2500 HD | 8.1L | V8 | 153.0" | N/A | Premium; with 2.5 (in) Muffler Inlet; with Federal Emission System; except Low Emission Vehicle (LEV); Limited Lifetime Warranty; If welded assembly, replace all required parts; with Small Diameter Muffler; Use Reducer Bushing 41974 to connect with OE Converter Pipe; Quiet-Flow SS | |
| 2004 | Chevrolet | Silverado 2500 | 6.0L | V8 | 153.0" | N/A | Premium; with 2.5 (in) Muffler Inlet; with Federal Emission System; except Low Emission Vehicle (LEV); Limited Lifetime Warranty; If welded assembly, replace all required parts; with Small Diameter Muffler; Use Reducer Bushing 41974 to connect with OE Converter Pipe; Quiet-Flow SS | |
| 2004 | Chevrolet | Silverado 2500 HD | 6.0L | V8 | 133.0" | N/A | Premium; with 2.5 (in) Muffler Inlet; with Federal Emission System; except Low Emission Vehicle (LEV); Limited Lifetime Warranty; If welded assembly, replace all required parts; with Small Diameter Muffler; Use Reducer Bushing 41974 to connect with OE Converter Pipe; Quiet-Flow SS | |
| 2004 | Chevrolet | Silverado 2500 HD | 6.0L | V8 | 143.5" | N/A | Premium; with 2.5 (in) Muffler Inlet; with Federal Emission System; except Low Emission Vehicle (LEV); Limited Lifetime Warranty; If welded assembly, replace all required parts; with Small Diameter Muffler; Use Reducer Bushing 41974 to connect with OE Converter Pipe; Quiet-Flow SS | |
| 2004 | Chevrolet | Silverado 2500 HD | 6.0L | V8 | 153.0" | N/A | Premium; with 2.5 (in) Muffler Inlet; with Federal Emission System; except Low Emission Vehicle (LEV); Limited Lifetime Warranty; If welded assembly, replace all required parts; with Small Diameter Muffler; Use Reducer Bushing 41974 to connect with OE Converter Pipe; Quiet-Flow SS | |
| 2004 | Chevrolet | Silverado 2500 HD | 8.1L | V8 | 133.0" | N/A | Premium; with 2.5 (in) Muffler Inlet; with Federal Emission System; except Low Emission Vehicle (LEV); Limited Lifetime Warranty; If welded assembly, replace all required parts; with Small Diameter Muffler; Use Reducer Bushing 41974 to connect with OE Converter Pipe; Quiet-Flow SS | |
| 2004 | Chevrolet | Silverado 2500 HD | 8.1L | V8 | 143.5" | N/A | Premium; with 2.5 (in) Muffler Inlet; with Federal Emission System; except Low Emission Vehicle (LEV); Limited Lifetime Warranty; If welded assembly, replace all required parts; with Small Diameter Muffler; Use Reducer Bushing 41974 to connect with OE Converter Pipe; Quiet-Flow SS | |
| 2004 | Chevrolet | Silverado 2500 HD | 8.1L | V8 | 153.0" | N/A | Premium; with 2.5 (in) Muffler Inlet; with Federal Emission System; except Low Emission Vehicle (LEV); Limited Lifetime Warranty; If welded assembly, replace all required parts; with Small Diameter Muffler; Use Reducer Bushing 41974 to connect with OE Converter Pipe; Quiet-Flow SS | |
| 2004 | GMC | Sierra 2500 | 6.0L | V8 | 153.0" | N/A | Premium; with 2.5 (in) Muffler Inlet; with Federal Emission System; except Low Emission Vehicle (LEV); Limited Lifetime Warranty; If welded assembly, replace all required parts; with Small Diameter Muffler; Use Reducer Bushing 41974 to connect with OE Converter Pipe; Quiet-Flow SS | |
| 2004 | GMC | Sierra 2500 HD | 6.0L | V8 | 153.0" | N/A | Premium; with 2.5 (in) Muffler Inlet; with Federal Emission System; except Low Emission Vehicle (LEV); Limited Lifetime Warranty; If welded assembly, replace all required parts; with Small Diameter Muffler; Use Reducer Bushing 41974 to connect with OE Converter Pipe; Quiet-Flow SS | |
| 2004 | GMC | Sierra 2500 HD | 6.0L | V8 | 133.0" | N/A | Premium; with 2.5 (in) Muffler Inlet; with Federal Emission System; except Low Emission Vehicle (LEV); Limited Lifetime Warranty; If welded assembly, replace all required parts; with Small Diameter Muffler; Use Reducer Bushing 41974 to connect with OE Converter Pipe; Quiet-Flow SS | |
| 2004 | GMC | Sierra 2500 HD | 6.0L | V8 | 143.5" | N/A | Premium; with 2.5 (in) Muffler Inlet; with Federal Emission System; except Low Emission Vehicle (LEV); Limited Lifetime Warranty; If welded assembly, replace all required parts; with Small Diameter Muffler; Use Reducer Bushing 41974 to connect with OE Converter Pipe; Quiet-Flow SS | |
| 2004 | GMC | Sierra 2500 HD | 8.1L | V8 | 133.0" | N/A | Premium; with 2.5 (in) Muffler Inlet; with Federal Emission System; except Low Emission Vehicle (LEV); Limited Lifetime Warranty; If welded assembly, replace all required parts; with Small Diameter Muffler; Use Reducer Bushing 41974 to connect with OE Converter Pipe; Quiet-Flow SS | |
| 2004 | GMC | Sierra 2500 HD | 8.1L | V8 | 143.5" | N/A | Premium; with 2.5 (in) Muffler Inlet; with Federal Emission System; except Low Emission Vehicle (LEV); Limited Lifetime Warranty; If welded assembly, replace all required parts; with Small Diameter Muffler; Use Reducer Bushing 41974 to connect with OE Converter Pipe; Quiet-Flow SS | |
| 2004 | GMC | Sierra 2500 HD | 8.1L | V8 | 153.0" | N/A | Premium; with 2.5 (in) Muffler Inlet; with Federal Emission System; except Low Emission Vehicle (LEV); Limited Lifetime Warranty; If welded assembly, replace all required parts; with Small Diameter Muffler; Use Reducer Bushing 41974 to connect with OE Converter Pipe; Quiet-Flow SS | |
| 2003 | Chevrolet | Silverado 2500 HD | 6.0L | V8 | 133.0" | N/A | Premium; with 2.5 (in) Muffler Inlet; with Federal Emission System; except Low Emission Vehicle (LEV); Limited Lifetime Warranty; If welded assembly, replace all required parts; with Small Diameter Muffler; Use Reducer Bushing 41974 to connect with OE Converter Pipe; Quiet-Flow SS | |
| 2003 | Chevrolet | Silverado 2500 HD | 6.0L | V8 | 143.5" | N/A | Premium; with 2.5 (in) Muffler Inlet; with Federal Emission System; except Low Emission Vehicle (LEV); Limited Lifetime Warranty; If welded assembly, replace all required parts; with Small Diameter Muffler; Use Reducer Bushing 41974 to connect with OE Converter Pipe; Quiet-Flow SS | |
| 2003 | Chevrolet | Silverado 2500 HD | 6.0L | V8 | 153.0" | N/A | Premium; with 2.5 (in) Muffler Inlet; with Federal Emission System; except Low Emission Vehicle (LEV); Limited Lifetime Warranty; If welded assembly, replace all required parts; with Small Diameter Muffler; Use Reducer Bushing 41974 to connect with OE Converter Pipe; Quiet-Flow SS | |
| 2003 | Chevrolet | Silverado 2500 HD | 8.1L | V8 | 133.0" | N/A | Premium; with 2.5 (in) Muffler Inlet; with Federal Emission System; except Low Emission Vehicle (LEV); Limited Lifetime Warranty; If welded assembly, replace all required parts; with Small Diameter Muffler; Use Reducer Bushing 41974 to connect with OE Converter Pipe; Quiet-Flow SS | |
| 2003 | Chevrolet | Silverado 2500 HD | 8.1L | V8 | 143.5" | N/A | Premium; with 2.5 (in) Muffler Inlet; with Federal Emission System; except Low Emission Vehicle (LEV); Limited Lifetime Warranty; If welded assembly, replace all required parts; with Small Diameter Muffler; Use Reducer Bushing 41974 to connect with OE Converter Pipe; Quiet-Flow SS | |
| 2003 | Chevrolet | Silverado 2500 HD | 8.1L | V8 | 153.0" | N/A | Premium; with 2.5 (in) Muffler Inlet; with Federal Emission System; except Low Emission Vehicle (LEV); Limited Lifetime Warranty; If welded assembly, replace all required parts; with Small Diameter Muffler; Use Reducer Bushing 41974 to connect with OE Converter Pipe; Quiet-Flow SS | |
| 2003 | GMC | Sierra 2500 HD | 6.0L | V8 | 153.0" | N/A | Premium; with 2.5 (in) Muffler Inlet; with Federal Emission System; except Low Emission Vehicle (LEV); Limited Lifetime Warranty; If welded assembly, replace all required parts; with Small Diameter Muffler; Use Reducer Bushing 41974 to connect with OE Converter Pipe; Quiet-Flow SS | |
| 2003 | GMC | Sierra 2500 HD | 6.0L | V8 | 133.0" | N/A | Premium; with 2.5 (in) Muffler Inlet; with Federal Emission System; except Low Emission Vehicle (LEV); Limited Lifetime Warranty; If welded assembly, replace all required parts; with Small Diameter Muffler; Use Reducer Bushing 41974 to connect with OE Converter Pipe; Quiet-Flow SS | |
| 2003 | GMC | Sierra 2500 HD | 6.0L | V8 | 143.5" | N/A | Premium; with 2.5 (in) Muffler Inlet; with Federal Emission System; except Low Emission Vehicle (LEV); Limited Lifetime Warranty; If welded assembly, replace all required parts; with Small Diameter Muffler; Use Reducer Bushing 41974 to connect with OE Converter Pipe; Quiet-Flow SS | |
| 2003 | GMC | Sierra 2500 HD | 8.1L | V8 | 133.0" | N/A | Premium; with 2.5 (in) Muffler Inlet; with Federal Emission System; except Low Emission Vehicle (LEV); Limited Lifetime Warranty; If welded assembly, replace all required parts; with Small Diameter Muffler; Use Reducer Bushing 41974 to connect with OE Converter Pipe; Quiet-Flow SS | |
| 2003 | GMC | Sierra 2500 HD | 8.1L | V8 | 143.5" | N/A | Premium; with 2.5 (in) Muffler Inlet; with Federal Emission System; except Low Emission Vehicle (LEV); Limited Lifetime Warranty; If welded assembly, replace all required parts; with Small Diameter Muffler; Use Reducer Bushing 41974 to connect with OE Converter Pipe; Quiet-Flow SS | |
| 2003 | GMC | Sierra 2500 HD | 8.1L | V8 | 153.0" | N/A | Premium; with 2.5 (in) Muffler Inlet; with Federal Emission System; except Low Emission Vehicle (LEV); Limited Lifetime Warranty; If welded assembly, replace all required parts; with Small Diameter Muffler; Use Reducer Bushing 41974 to connect with OE Converter Pipe; Quiet-Flow SS | |
| 2002 | Chevrolet | Silverado 2500 HD | 6.0L | V8 | 133.0" | N/A | Premium; with 2.5 (in) Muffler Inlet; with Federal Emission System; except Low Emission Vehicle (LEV); Limited Lifetime Warranty; If welded assembly, replace all required parts; with Small Diameter Muffler; Use Reducer Bushing 41974 to connect with OE Converter Pipe; Quiet-Flow SS | |
| 2002 | Chevrolet | Silverado 2500 HD | 6.0L | V8 | 143.5" | N/A | Premium; with 2.5 (in) Muffler Inlet; with Federal Emission System; except Low Emission Vehicle (LEV); Limited Lifetime Warranty; If welded assembly, replace all required parts; with Small Diameter Muffler; Use Reducer Bushing 41974 to connect with OE Converter Pipe; Quiet-Flow SS | |
| 2002 | Chevrolet | Silverado 2500 HD | 6.0L | V8 | 153.0" | N/A | Premium; with 2.5 (in) Muffler Inlet; with Federal Emission System; except Low Emission Vehicle (LEV); Limited Lifetime Warranty; If welded assembly, replace all required parts; with Small Diameter Muffler; Use Reducer Bushing 41974 to connect with OE Converter Pipe; Quiet-Flow SS | |
| 2002 | Chevrolet | Silverado 2500 HD | 8.1L | V8 | 133.0" | N/A | Premium; with 2.5 (in) Muffler Inlet; with Federal Emission System; except Low Emission Vehicle (LEV); Limited Lifetime Warranty; If welded assembly, replace all required parts; with Small Diameter Muffler; Use Reducer Bushing 41974 to connect with OE Converter Pipe; Quiet-Flow SS | |
| 2002 | Chevrolet | Silverado 2500 HD | 8.1L | V8 | 143.5" | N/A | Premium; with 2.5 (in) Muffler Inlet; with Federal Emission System; except Low Emission Vehicle (LEV); Limited Lifetime Warranty; If welded assembly, replace all required parts; with Small Diameter Muffler; Use Reducer Bushing 41974 to connect with OE Converter Pipe; Quiet-Flow SS | |
| 2002 | Chevrolet | Silverado 2500 HD | 8.1L | V8 | 153.0" | N/A | Premium; with 2.5 (in) Muffler Inlet; with Federal Emission System; except Low Emission Vehicle (LEV); Limited Lifetime Warranty; If welded assembly, replace all required parts; with Small Diameter Muffler; Use Reducer Bushing 41974 to connect with OE Converter Pipe; Quiet-Flow SS | |
| 2002 | GMC | Sierra 2500 HD | 6.0L | V8 | 153.0" | N/A | Premium; with 2.5 (in) Muffler Inlet; with Federal Emission System; except Low Emission Vehicle (LEV); Limited Lifetime Warranty; If welded assembly, replace all required parts; with Small Diameter Muffler; Use Reducer Bushing 41974 to connect with OE Converter Pipe; Quiet-Flow SS | |
| 2002 | GMC | Sierra 2500 HD | 6.0L | V8 | 133.0" | N/A | Premium; with 2.5 (in) Muffler Inlet; with Federal Emission System; except Low Emission Vehicle (LEV); Limited Lifetime Warranty; If welded assembly, replace all required parts; with Small Diameter Muffler; Use Reducer Bushing 41974 to connect with OE Converter Pipe; Quiet-Flow SS | |
| 2002 | GMC | Sierra 2500 HD | 6.0L | V8 | 143.5" | N/A | Premium; with 2.5 (in) Muffler Inlet; with Federal Emission System; except Low Emission Vehicle (LEV); Limited Lifetime Warranty; If welded assembly, replace all required parts; with Small Diameter Muffler; Use Reducer Bushing 41974 to connect with OE Converter Pipe; Quiet-Flow SS | |
| 2002 | GMC | Sierra 2500 HD | 8.1L | V8 | 133.0" | N/A | Premium; with 2.5 (in) Muffler Inlet; with Federal Emission System; except Low Emission Vehicle (LEV); Limited Lifetime Warranty; If welded assembly, replace all required parts; with Small Diameter Muffler; Use Reducer Bushing 41974 to connect with OE Converter Pipe; Quiet-Flow SS | |
| 2002 | GMC | Sierra 2500 HD | 8.1L | V8 | 143.5" | N/A | Premium; with 2.5 (in) Muffler Inlet; with Federal Emission System; except Low Emission Vehicle (LEV); Limited Lifetime Warranty; If welded assembly, replace all required parts; with Small Diameter Muffler; Use Reducer Bushing 41974 to connect with OE Converter Pipe; Quiet-Flow SS | |
| 2002 | GMC | Sierra 2500 HD | 8.1L | V8 | 153.0" | N/A | Premium; with 2.5 (in) Muffler Inlet; with Federal Emission System; except Low Emission Vehicle (LEV); Limited Lifetime Warranty; If welded assembly, replace all required parts; with Small Diameter Muffler; Use Reducer Bushing 41974 to connect with OE Converter Pipe; Quiet-Flow SS | |
| 2001 | Chevrolet | Silverado 2500 HD | 6.0L | V8 | 133.0" | N/A | Premium; with 2.5 (in) Muffler Inlet; with Federal Emission System; except Low Emission Vehicle (LEV); Limited Lifetime Warranty; If welded assembly, replace all required parts; with Small Diameter Muffler; Use Reducer Bushing 41974 to connect with OE Converter Pipe; Quiet-Flow SS | |
| 2001 | Chevrolet | Silverado 2500 HD | 6.0L | V8 | 143.5" | N/A | Premium; with 2.5 (in) Muffler Inlet; with Federal Emission System; except Low Emission Vehicle (LEV); Limited Lifetime Warranty; If welded assembly, replace all required parts; with Small Diameter Muffler; Use Reducer Bushing 41974 to connect with OE Converter Pipe; Quiet-Flow SS | |
| 2001 | Chevrolet | Silverado 2500 HD | 6.0L | V8 | 153.0" | N/A | Premium; with 2.5 (in) Muffler Inlet; with Federal Emission System; except Low Emission Vehicle (LEV); Limited Lifetime Warranty; If welded assembly, replace all required parts; with Small Diameter Muffler; Use Reducer Bushing 41974 to connect with OE Converter Pipe; Quiet-Flow SS | |
| 2001 | Chevrolet | Silverado 2500 HD | 8.1L | V8 | 133.0" | N/A | Premium; with 2.5 (in) Muffler Inlet; with Federal Emission System; except Low Emission Vehicle (LEV); Limited Lifetime Warranty; If welded assembly, replace all required parts; with Small Diameter Muffler; Use Reducer Bushing 41974 to connect with OE Converter Pipe; Quiet-Flow SS | |
| 2001 | Chevrolet | Silverado 2500 HD | 8.1L | V8 | 143.5" | N/A | Premium; with 2.5 (in) Muffler Inlet; with Federal Emission System; except Low Emission Vehicle (LEV); Limited Lifetime Warranty; If welded assembly, replace all required parts; with Small Diameter Muffler; Use Reducer Bushing 41974 to connect with OE Converter Pipe; Quiet-Flow SS | |
| 2001 | Chevrolet | Silverado 2500 HD | 8.1L | V8 | 153.0" | N/A | Premium; with 2.5 (in) Muffler Inlet; with Federal Emission System; except Low Emission Vehicle (LEV); Limited Lifetime Warranty; If welded assembly, replace all required parts; with Small Diameter Muffler; Use Reducer Bushing 41974 to connect with OE Converter Pipe; Quiet-Flow SS | |
| 2001 | GMC | Sierra 2500 HD | 6.0L | V8 | 153.0" | N/A | Premium; with 2.5 (in) Muffler Inlet; with Federal Emission System; except Low Emission Vehicle (LEV); Limited Lifetime Warranty; If welded assembly, replace all required parts; with Small Diameter Muffler; Use Reducer Bushing 41974 to connect with OE Converter Pipe; Quiet-Flow SS | |
| 2001 | GMC | Sierra 2500 HD | 6.0L | V8 | 133.0" | N/A | Premium; with 2.5 (in) Muffler Inlet; with Federal Emission System; except Low Emission Vehicle (LEV); Limited Lifetime Warranty; If welded assembly, replace all required parts; with Small Diameter Muffler; Use Reducer Bushing 41974 to connect with OE Converter Pipe; Quiet-Flow SS | |
| 2001 | GMC | Sierra 2500 HD | 6.0L | V8 | 143.5" | N/A | Premium; with 2.5 (in) Muffler Inlet; with Federal Emission System; except Low Emission Vehicle (LEV); Limited Lifetime Warranty; If welded assembly, replace all required parts; with Small Diameter Muffler; Use Reducer Bushing 41974 to connect with OE Converter Pipe; Quiet-Flow SS | |
| 2001 | GMC | Sierra 2500 HD | 8.1L | V8 | 133.0" | N/A | Premium; with 2.5 (in) Muffler Inlet; with Federal Emission System; except Low Emission Vehicle (LEV); Limited Lifetime Warranty; If welded assembly, replace all required parts; with Small Diameter Muffler; Use Reducer Bushing 41974 to connect with OE Converter Pipe; Quiet-Flow SS | |
| 2001 | GMC | Sierra 2500 HD | 8.1L | V8 | 143.5" | N/A | Premium; with 2.5 (in) Muffler Inlet; with Federal Emission System; except Low Emission Vehicle (LEV); Limited Lifetime Warranty; If welded assembly, replace all required parts; with Small Diameter Muffler; Use Reducer Bushing 41974 to connect with OE Converter Pipe; Quiet-Flow SS | |
| 2001 | GMC | Sierra 2500 HD | 8.1L | V8 | 153.0" | N/A | Premium; with 2.5 (in) Muffler Inlet; with Federal Emission System; except Low Emission Vehicle (LEV); Limited Lifetime Warranty; If welded assembly, replace all required parts; with Small Diameter Muffler; Use Reducer Bushing 41974 to connect with OE Converter Pipe; Quiet-Flow SS |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.