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OE Quality
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WalkerPart #: 21476
Walker 21476 Exhaust Muffler
⚙️ 15 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$122.06Free Shipping
🚚Free ShippingNo Cost to Continental U.S.
🔄Free Returns*Wrong fit? No cost
🛡️60-Day ReturnsMoney back guarantee
*Free return shipping only qualifies if our fitment verification tool is used.
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✅ In Stock · Ready To Ship
Most orders ship same-day if ordered before 1pm CST.
✅OE Direct Replacement — Bolt-on fit, no modifications needed
📦Heavy Duty
🚗Fitment: Chevrolet and GMC, P30 and P3500
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST
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Walker 21476 Exhaust Muffler
| Brand | Walker |
| Part Number | 21476 |
| Position | Heavy Duty |
| Universal Or Specific Fit | Universal |
| Shape | Round |
| Grade Type | Regular |
| Inlet Inside Diameter | 3 |
| Body Width | 8.375 |
| Inlet Quantity | 1 |
| Outlet Inside Diameter | 3 |
| Outlet Quantity | 1 |
| Reversible | No |
| Tunable | No |
| Overall Length | 36.25 |
| Body Height | 8.375 |
| Body Length | 29.75 |
| Body Material | Steel |
| Finish | Aluminized |
| Inlet 1 Inside Diameter | 3 |
| Inlet 1 Type | Pipe connection |
| Inlet Configuration | Offset |
| Inlet Offset | 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 15 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Wheel Base | Position | Notes |
|---|---|---|---|---|---|---|---|
| 1991 | Chevrolet | P30 | 3.9L | L4 | 157.0" | N/A | Arc Welded Construction Recommended for Commercial Use; Heavy Duty |
| 1991 | Chevrolet | P30 | 3.9L | L4 | 178.0" | N/A | Arc Welded Construction Recommended for Commercial Use; Heavy Duty |
| 1991 | Chevrolet | P30 | 3.9L | L4 | N/A | Heavy Duty | |
| 1991 | GMC | P3500 | 3.9L | L4 | 157.0" | N/A | Arc Welded Construction Recommended for Commercial Use; Heavy Duty |
| 1991 | GMC | P3500 | 3.9L | L4 | 178.0" | N/A | Arc Welded Construction Recommended for Commercial Use; Heavy Duty |
| 1991 | GMC | P3500 | 3.9L | L4 | N/A | Heavy Duty | |
| 1990 | Chevrolet | P30 | 3.9L | L4 | 157.0" | N/A | Arc Welded Construction Recommended for Commercial Use; Heavy Duty |
| 1990 | Chevrolet | P30 | 3.9L | L4 | 178.0" | N/A | Arc Welded Construction Recommended for Commercial Use; Heavy Duty |
| 1990 | Chevrolet | P30 | 3.9L | L4 | N/A | Heavy Duty | |
| 1990 | GMC | P3500 | 3.9L | L4 | 157.0" | N/A | Arc Welded Construction Recommended for Commercial Use; Heavy Duty |
| 1990 | GMC | P3500 | 3.9L | L4 | 178.0" | N/A | Arc Welded Construction Recommended for Commercial Use; Heavy Duty |
| 1990 | GMC | P3500 | 3.9L | L4 | N/A | Heavy Duty | |
| 1989 | GMC | P3500 | 3.9L | L4 | 157.0" | N/A | Arc Welded Construction Recommended for Commercial Use; Heavy Duty |
| 1989 | GMC | P3500 | 3.9L | L4 | 178.0" | N/A | Arc Welded Construction Recommended for Commercial Use; Heavy Duty |
| 1989 | GMC | P3500 | 3.9L | L4 | N/A | Heavy Duty |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
27043655M-139M085023M085080
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.