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The WALKER 18914 SoundFX® Exhaust Muffler is a direct-fit, OE-style replacement designed to restore factory exhaust tone and performance for full-size Ford and Lincoln SUVs equipped with V8 engines. Constructed from 100% aluminized steel, this premium muffler provides excellent corrosion resistance and durability compared to standard low-carbon steel units.
Featuring OE-style louvered tubes, internal partitions, and spun-locked heads, the 18914 reduces radiated noise while maintaining proper exhaust flow characteristics. Its direct-fit configuration includes OE-style hangers and pipe routing, allowing for a simple bolt-on installation with no welding required.
Engineered to provide long-lasting service life and reliable sound control, this muffler is an ideal replacement for Expedition and Navigator models from 1999–2002.
Aluminized Steel Construction enhances corrosion resistance
Direct-Fit Bolt-On Installation using factory-style hangers and routing
OE-Style Louvered Tubes reduce noise and deliver factory-correct acoustics
Spun-Locked Heads & Internal Partitions improve durability and resist distortion
Moisture-Reducing Drainage System extends service life
Engineered & Tested to match original exhaust performance and tone
| Specification | Detail |
|---|---|
| Shape | Oval |
| Finish | Aluminized |
| Body Material | Steel |
| Inlet Type | Pipe Connection |
| Outlet Type | Pipe Connection |
| Inlet Inside Diameter | 2.500 in |
| Outlet Inside Diameter | 2.500 in |
| Inlet Location | Offset |
| Outlet Location | Offset |
| Inlet Quantity | 1 |
| Outlet Quantity | 1 |
| Body Height | 7.000 in |
| Body Length | 24.000 in |
| Body Width | 9.000 in |
| Overall Length | 28.000 in |
| Inlet Offset | 1.625 in |
| Reversible | No |
| Tunable | No |
| Universal or Specific Fit | Specific |
| Grade Type | Premium |
(One muffler required per vehicle unless otherwise noted.)
4.6L V8 (281 cid) → 1999–2002
5.4L V8 (330 cid) → 1999–2002
5.4L V8 (330 cid) → 1999–2002
Direct-fit design ensures simple bolt-on installation
Ideal for restoring OE-style exhaust flow and noise levels
Replace gaskets, clamps, and exhaust mounts as needed
SoundFX series is engineered to extend muffler life under daily driving 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).
