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Walker 18985 Exhaust Muffler
| Brand | Walker 18985 |
|---|---|
| Muffler Type | Reflection |
| Universal Or Specific Fit | Specific |
| Shape | Oval |
| Grade Type | Regular |
| Inlet Inside Diameter | 2 |
| Body Width | 9 |
| Outlet Quantity | 1 |
| Reversible | No |
| Tunable | No |
| Overall Length | 26 |
| Body Height | 7 |
| Body Length | 22 |
| Body Material | Steel |
| Finish | Aluminized |
| Inlet 1 Inside Diameter | 2 |
| Inlet 1 Type | Pipe connection |
| Inlet 2 Inside Diameter | 2 |
| Inlet 2 Type | Pipe connection |
| Inlet Configuration | Offset |
| Inlet Offset | 1.625 |
| Inlet Quantity | 2 |
| Inlet Type | Pipe connection |
| Outlet 1 Outside Diameter | 2.75 |
| Outlet 1 Type | Pipe connection |
| Outlet Configuration | Offset |
| Outlet Outside Diameter | 2.75 |
| Outlet Type | Pipe connection |
| Product line | SoundFX Direct Fit |
| Fits | Cadillac, Chevrolet, and GMC · 12 vehicles |
Direct-fit design. Installs as a specific replacement with no modifications needed.
Aluminized steel. Helps extend service life versus low-carbon steel.
Reflection muffler. Delivers quality appearance with favorable acoustics.
Cross-references TYC 700358 for the same application. See all 1.
Walker SoundFX Direct Fit Muffler for GM SUVs
Walker SoundFX Direct Fit muffler Part Number 18985 is a specific-fit exhaust muffler built for select Cadillac, Chevrolet, and GMC applications. It uses 100% aluminized steel for improved service life versus low-carbon steel and is shaped to deliver a quality appearance with controlled exhaust acoustics.
The SoundFX Direct Fit line focuses on OE-style replacement fitment and durable construction. For shoppers searching for a direct-fit muffler for a 1996-2000 Chevrolet Tahoe, 1996-2000 GMC Yukon, or 1999-2000 Cadillac Escalade, Part Number 18985 matches the listed emission-system applications and factory-style pipe connection layout.
Key Features
- Walker SoundFX Direct Fit exhaust muffler
- Part Number 18985
- Specific-fit design for listed Cadillac, Chevrolet, and GMC vehicles
- Oval steel body with aluminized finish
- Reflection-style muffler construction
- Mechanical interior joints and spun-locked heads for added durability
- Dual 2-inch inlet pipe connections with offset configuration
- Single 2.75-inch outlet pipe connection with offset configuration
- Body dimensions: 22-inch length, 9-inch width, 7-inch height
Product Details
Walker SoundFX Direct Fit Part Number 18985 is engineered as a replacement exhaust muffler for vehicles that require a direct-fit, OE-style layout. The aluminized steel body helps resist corrosion better than low-carbon steel, while the reflection muffler design supports controlled exhaust tone without changing the factory-style routing. This makes it a practical choice for owners looking for a replacement muffler for a 1999-2000 Chevrolet Tahoe, 1999-2000 GMC Yukon, or 1999-2000 Cadillac Escalade with Federal Emission System coverage, as well as the earlier listed 1996-1998 Tahoe and Yukon applications.
This part cross-references TYC 700358 for the same application.
Common Exhaust Issues It Can Address
- Rust-through or corrosion in the original muffler body
- Exhaust noise caused by a damaged internal muffler structure
- Restricted exhaust flow from a deteriorated muffler assembly
- Fitment problems when replacing a factory-style welded muffler section
- Loss of factory exhaust tone on listed GM SUV applications
Installation Notes
Compatible With 1996-1997 Chevrolet Tahoe, N/A; 1998 Chevrolet Tahoe, N/A; 1999-2000 Chevrolet Tahoe, N/A; 1996-1997 GMC Yukon, N/A; 1998 GMC Yukon, N/A; 1999-2000 GMC Yukon, N/A; and 1999-2000 Cadillac Escalade, N/A. Notes for the listed vehicles include Federal Emission System coverage on certain applications, Luxury Edition Package coverage on select 1999-2000 Tahoe and Yukon models, and possible modifications or additional parts if the original assembly was welded. Verify pipe diameter, offset configuration, and emission-system requirements before installation.
Quality Assurance
Walker builds the SoundFX Direct Fit line with aluminized steel, mechanical interior joints, and spun-locked heads to support long-term durability and consistent fitment on the specified GM SUV applications.
| Year | Make | Model | Submodel | # Doors | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|---|---|
| 2000 | Cadillac | Escalade | — | — | 5.7L | V8 | N/A | with Federal Emission System; If welded assembly, modifications and/or additional parts may be required.; SoundFX Direct Fit |
| 2000 | Chevrolet | Tahoe | — | 4 Door | 5.7L | V8 | N/A | with Federal Emission System; with Luxury Edition Package; If welded assembly, replace all required parts; SoundFX Direct Fit |
| 2000 | GMC | Yukon | Denali | 4 Door | 5.7L | V8 | N/A | with Federal Emission System; with Luxury Edition Package; If welded assembly, replace all required parts; SoundFX Direct Fit |
| 1999 | Cadillac | Escalade | — | — | 5.7L | V8 | N/A | with Federal Emission System; If welded assembly, modifications and/or additional parts may be required.; SoundFX Direct Fit |
| 1999 | Chevrolet | Tahoe | — | 4 Door | 5.7L | V8 | N/A | with Federal Emission System; with Luxury Edition Package; If welded assembly, replace all required parts; SoundFX Direct Fit |
| 1999 | GMC | Yukon | — | 4 Door | 5.7L | V8 | N/A | with Federal Emission System; with Luxury Edition Package; If welded assembly, replace all required parts; SoundFX Direct Fit |
| 1998 | Chevrolet | Tahoe | — | 4 Door | 5.7L | V8 | N/A | with Federal Emission System; If welded assembly, replace all required parts; SoundFX Direct Fit |
| 1998 | GMC | Yukon | — | 4 Door | 5.7L | V8 | N/A | with Federal Emission System; If welded assembly, replace all required parts; SoundFX Direct Fit |
| 1997 | Chevrolet | Tahoe | — | 4 Door | 5.7L | V8 | N/A | If welded assembly, replace all required parts; SoundFX Direct Fit |
| 1997 | GMC | Yukon | — | 4 Door | 5.7L | V8 | N/A | If welded assembly, replace all required parts; SoundFX Direct Fit |
| 1996 | Chevrolet | Tahoe | — | 4 Door | 5.7L | V8 | N/A | If welded assembly, replace all required parts; SoundFX Direct Fit |
| 1996 | GMC | Yukon | — | 4 Door | 5.7L | V8 | N/A | If welded assembly, replace all required parts; SoundFX Direct Fit |
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