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The Walker SoundFX® 18906 is an OE-style direct-fit muffler engineered for 1996–2000 Chevrolet and GMC 2500/3500 trucks equipped with 5.7L or 7.4L V8 engines. Built with 100% aluminized steel, it enhances service life while offering factory-style sound quality. Its mechanical joints, internal partitions, and spun-locked heads ensure structural stability and long-term durability under heavy-duty workloads.
Corrosion-Resistant Aluminized Steel reduces rust and extends life
OE-Style Louvered Tubes deliver factory-level acoustic dampening
Direct-Fit Replacement with OE-like routing for simplified installation
Durable Construction using mechanically joined tubes and internal partitions
Internal Drainage System minimizes moisture accumulation
Engineered for Longevity, ideal for heavy-duty truck applications
| Specification | Detail |
|---|---|
| Shape | Oval |
| Finish | Aluminized |
| Outlet Location | Offset |
| Inlet Type | Pipe Connection |
| Outlet Type | Pipe Connection |
| Inlet Inside Diameter | 2.500 in |
| Body Height | 7.000 in |
| Body Length | 24.000 in |
| Body Width | 9.000 in |
| Overall Length | 29.000 in |
| Inlet Offset | 2.625 in |
| Inlet Location | Offset |
| Inlet Quantity | 2 |
| Body Material | Steel |
| Outlet Outside Diameter | 2.750 in |
| Outlet Quantity | 1 |
| Hanger Included | No |
| Reversible | No |
| Fit Type | Specific |
| Grade Type | Premium |
C2500 (1996–2000) — 5.7L V8 350cid / 7.4L V8 454cid
C3500 (1996–2000) — 5.7L V8 350cid / 7.4L V8 454cid
K2500 (1996–2000) — 5.7L V8 350cid / 7.4L V8 454cid
K3500 (1996–2000) — 5.7L V8 350cid / 7.4L V8 454cid
C2500 (1996–2000) — 5.7L V8 350cid / 7.4L V8 454cid
C3500 (1996–2000) — 5.7L V8 350cid / 7.4L V8 454cid
K2500 (1996–2000) — 5.7L V8 350cid / 7.4L V8 454cid
K3500 (1996–2000) — 5.7L V8 350cid / 7.4L V8 454cid
Designed as a direct-fit bolt-on muffler for GM 2500/3500 trucks
Uses OE-style pipe routing for easier alignment
No welding required when used with appropriate clamps and hardware
Vehicles may require re-use or replacement of existing hangers
Always inspect and replace related exhaust components (gaskets, clamps, hangers) for best fitment
Ensure both inlet pipes are properly aligned—dual-inlet design requires precise connection
Recommended for vehicles experiencing exhaust leaks, increased noise, or deteriorated factory mufflers
Order Processing
All orders are processed and shipped within 24 hours of purchase (excluding weekends and holidays).
Orders placed after 3:00 PM EST may ship the following business day.
Shipping Methods
Customers select their preferred shipping method and speed at checkout.
Shipping times are determined by the carrier and cannot be guaranteed by us.
Tracking information will be provided once your order has shipped.
Shipping Coverage
If your package arrives damaged, please notify the delivery driver immediately and contact the shipping carrier to file a claim.
You must report any missing or damaged items within 14 days of delivery.
After this time, we cannot be held responsible for lost or damaged items.
Return Window
You have 30 days from the date of delivery to request a return.
After 30 days, we are unable to accept returns, exchanges, or refund requests.
Eligibility
Items must be returned in their original condition—unused, unwashed, and with all tags and packaging intact.
Certain products may not be eligible for return (e.g., special-order items, customized products, or perishable goods).
Items that have been altered, installed, or modified cannot be returned.
Return Process
Contact our Customer Support team to request a Return Authorization (RMA) before sending items back.
Once your return is approved, you’ll receive instructions on where to send the product.
Customers are responsible for return shipping costs unless the item was defective or incorrect.
Refunds
Refunds are issued to the original payment method once the returned item has been received and inspected.
Please allow 5–10 business days for the refund to appear on your account.
In some cases, a restocking fee may apply (if applicable, this will be disclosed during your return authorization).
