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The Walker SoundFX® 18185 muffler is a premium direct-fit replacement designed for select late-80s/early-90s Honda CRX and Civic models. Constructed from 100% aluminized steel, it provides stronger corrosion resistance and increased durability compared to standard low-carbon steel mufflers. OE-style internal louvered tubes ensure a smooth, quiet, factory-correct exhaust tone, while mechanically joined internal components allow long-term reliability under varying temperature conditions.
This muffler features precise pipe routing and hanger positions to make installation quick and straightforward.
100% Aluminized Steel for corrosion resistance and increased service life
Internal Drainage System helps reduce moisture buildup
OE-Style Louvered Tubes deliver authentic factory sound quality
Direct-Fit, Bolt-On Design — no fabrication or welding required
Spun-Locked Heads & Mechanical Joints enhance durability under heat cycling
Designed & Tested for Longer Life compared to generic replacement mufflers
| Specification | Value |
|---|---|
| Shape | Oval |
| Finish | Aluminized |
| Inlet Type | Pipe Connection |
| Outlet Type | Pipe Connection |
| Inlet Inside Diameter | 1.500 in |
| Outlet Inside Diameter | 1.500 in |
| Body Height | 4.250 in |
| Body Length | 17.000 in |
| Body Width | 9.750 in |
| Overall Length | 19.750 in |
| Inlet Location | Offset |
| Inlet Offset | 2.875 in |
| Outlet Location | Offset |
| Hanger Included | Yes |
| Body Material | Steel |
| Reversible | No |
| Fitment | Specific |
| Grade Type | Premium |
CRX (1988–1991) — 1.5L L4 1493cc
Civic (1988–1991) — 1.5L L4 1493cc
Civic (1988–1991, 4WD) — 1.6L L4 1588cc / 98cid
Designed as a direct-fit replacement for factory exhaust systems
Includes OE-style hangers, aligned to original mounting points
No welding required—intended for clamp-on installation (clamps sold separately)
Ensure the inlet offset aligns correctly toward the front of the vehicle
Replace or inspect exhaust gaskets when installing
Not reversible—must be installed in the correct direction for proper flow
Recommended to inspect catalytic converter and piping for corrosion before installation
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).
