15% OFF ORDERS $35+ | 20% OFF $100+ | ONLINE ONLY
USE CODE
AUTOPARTS
*
Exclusions apply.
Advance Auto Parts Logo
Choose a Store
  • Shop All
  • Replacement Parts
  • Performance Parts
  • Accessories
  • Oil & Fluids
  • Special Offers
  • Advance Rewards
  • Advice & How-Tos
  • Project Guides
  • FAQ / Help Desk
Share
Product thumb
Product thumb
Product thumb
Product thumb
Product thumb
Product thumb
Product main large

Walker SoundFX Direct Fit Exhaust Muffler 2.5" Inlet (ID) 2.25" Outlet (ID)

(1 review)
Part # 18921
1 year warranty
Loading...
How Would You Like To Get This Item?

Store Pickup

Loading...Loading...Loading...

Same Day Home Delivery

Loading...Loading...Loading...

Home Delivery

Loading...Loading...Loading...
Loading...
Loading...
Loading...Loading...Loading...Loading...Loading...

Product Information

Product Details
Part No. 18921
Warranty Details (1 Year Warranty)
Walker SoundFX direct-fit mufflers are engineered with 100% aluminized steel for longer service life compared to low-carbon steel. Featuring mechanical interior joints and spun-locked heads for durability and stability, SoundFX mufflers deliver quality appearance and favorable acoustics.

Product Features:
  • RESISTS CORROSION -- Aluminized steel construction and internal drainage system helps reduce corrosion
  • BUILT TO LAST -- Internal partitions and mechanically joined tubes allow expansion and contraction during temperature changes to minimize distortion while spun-locked heads and OE-style spot welds provide stability and longer service life
  • EASY TO INSTALL -- Direct-fit bolt-on replacement solution with OE-style hangers, brackets and pipe routings for easy installation that doesn't require specialized fabrication and/or welding
  • FACTORY SOUND -- Louvered tubes help reduce radiated noise for factory-style sound quality compared to straight perforated tubes
  • GET MORE MILES FROM YOUR MUFFLER -- Designed and tested to extend muffler life
Specifications
Body Height:
7.000 in

Body Length:
22.000 in

Body Material:
Steel

Body Width:
9.000 in

Finish:
Aluminized

Grade Type:
Premium

Hanger Included:
Yes

Inlet 1 Inside Diameter:
2.5 in

Inlet 1 Type:
Pipe Connection

Inlet Configuration:
Offset

Inlet Inside Diameter:
2.500 in

Inlet Location:
Offset

Inlet Offset:
1.625 in

Inlet Quantity:
1

Inlet Type:
Pipe Connection

Muffler Type:
Combination

Outlet 1 Inside Diameter:
2.25 in

Outlet Configuration:
Offset

Outlet Inside Diameter:
2.250 in

Outlet Location:
Offset

Outlet Quantity:
1

Outlet Type:
Pipe Connection

Overall Length:
26.000 in

Reversible:
No

Shape:
Oval

Tunable:
No

Universal Or Specific Fit:
Specific
Loading...
Loading...Loading...Loading...Loading...Loading...
5 out of 5
1 Customer Reviews
0% of respondents would recommend this to a friend
Ratings Distribution
5 Stars
1
4 Stars
0
3 Stars
0
2 Stars
0
1 Star
0
Pros
No Pros
Cons
No Cons
Reviewed by 1 Customers
As good as original factory part
Verified Buyer -
Installation was easy, exactly the same as oem part removed.
Displaying Reviews 1 - 5Back to Top
Loading...
Loading...Loading...Loading...Loading...Loading...
No results
Loading...
Loading...Loading...Loading...Loading...Loading...
Feedback
Be The First To Know About Deals And Promotions.
Plus, create an account to receive $5 off of $20 or more.
TOP REPLACEMENT PARTS
Brake Pads & Shoes
Brake Rotors
Alternators
Water Pumps
Starters
Brake Calipers

Order Lookup

Help Desk

Store Locator

In Store Services

Mobile App

CUSTOMER SUPPORT
Accessibility Statement
Contact Us
Forgot Password
Help Desk
In Store Pickup
In Store Services
Order Tracking
Recall Information
Return Policy
Same Day Delivery
© 2026 Advance Auto Parts
Privacy Policy
Terms of Use
Site Map
ADVANCING A WORLD IN MOTION®