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WalkerPart #: 21678
Walker 21678 Exhaust Muffler - Left
⚙️ 7 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$156.94Free 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.
🔥
✅ In Stock · Ready To Ship
Most orders ship same-day if ordered before 1pm CST.
✅OE Direct Replacement — Bolt-on fit, no modifications needed
📦Quiet-Flow SS, Left
🚗Fitment: Honda, Pilot
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST
Not what you need? Click here for all Exhaust Muffler options
Walker 21678 Exhaust Muffler - Left
| Brand | Walker |
| Part Number | 21678 |
| Position | Quiet-Flow SS, Left |
| Muffler Type | Reflection |
| Universal Or Specific Fit | Specific |
| Shape | Oval |
| Grade Type | Regular |
| Inlet Inside Diameter | 1.75 |
| Body Width | 11 |
| Inlet Quantity | 1 |
| Outlet Quantity | 1 |
| Reversible | Yes |
| Tunable | No |
| Overall Length | 28.5 |
| Body Height | 5.5 |
| Body Length | 14 |
| Body Material | Stainless steel |
| Finish | Aluminized |
| Inlet 1 Inside Diameter | 1.75 |
| Inlet 1 Type | Pipe connection |
| Inlet Configuration | Offset |
| Inlet Offset | 3.75 |
| Inlet Type | Pipe connection |
| Outlet 1 Outside Diameter | 2.25 |
| Outlet 1 Type | Tip |
| Outlet Configuration | Offset |
| Outlet Outside Diameter | 2.25 |
| Outlet Type | Tip |
This part fits 7 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2015 | Honda | Pilot | 3.5L | V6 | Left | Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS |
| 2014 | Honda | Pilot | 3.5L | V6 | Left | Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS |
| 2013 | Honda | Pilot | 3.5L | V6 | Left | Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS |
| 2012 | Honda | Pilot | 3.5L | V6 | Left | Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS |
| 2011 | Honda | Pilot | 3.5L | V6 | Left | Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS |
| 2010 | Honda | Pilot | 3.5L | V6 | Left | Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS |
| 2009 | Honda | Pilot | 3.5L | V6 | Left | Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS |
* 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:
280-1913003154839
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.