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The WALKER 18965 SoundFX® Exhaust Muffler is engineered as a direct-fit replacement for select Dodge and Ram truck models equipped with the 5.7L HEMI V8. Built from 100% aluminized steel, this muffler is designed to withstand harsh road environments, resist corrosion, and deliver factory-style exhaust tone and performance.
Its mechanically joined tubes, spun-locked heads, and internal partitions help ensure long-term durability, while the OE-style configuration guarantees straightforward installation without welding. Louvered tubes inside the chamber reduce noise and maintain OEM sound characteristics.
Aluminized Steel Construction for enhanced corrosion resistance
Direct-Fit, Bolt-On Installation — no welding required
OE-Style Louvered Tubes for factory-correct acoustics
Internal Drainage System to reduce moisture accumulation
Durable Spun-Locked Heads & Internal Partitions
Designed for Longer Service Life under demanding conditions
| Specification | Detail |
|---|---|
| Shape | Oval |
| Finish | Aluminized |
| Body Material | Steel |
| Inlet Type | Pipe Connection |
| Outlet Type | Pipe Connection |
| Inlet Inside Diameter | 3.000 in |
| Outlet Inside Diameter | 3.000 in |
| Body Height | 7.000 in |
| Body Length | 26.000 in |
| Body Width | 9.000 in |
| Hanger Included | Yes |
| Inlet Location | Offset |
| Outlet Location | Offset |
| Inlet Quantity | 1 |
| Outlet Quantity | 1 |
| Reversible | No |
| Tunable | No |
| Overall Length | 38.000 in |
| Inlet Offset | 2.000 in |
| Universal or Specific Fit | Specific |
| Grade Type | Premium |
2006–2008 – 5.7L V8 345cid
2003–2010 – 5.7L V8 345cid
2003–2008 – 5.7L V8 345cid
2012 – 5.7L V8 345cid
2011–2012 – 5.7L V8 345cid
Designed to bolt directly to OEM exhaust pipes
Includes hanger for proper alignment and mounting
No specialized fabrication needed
Built for long service life under truck-duty conditions
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).
