Quiet-Flow SS Muffler
Hover over the image to zoom in
Share this:

Walker Quiet-Flow SS Muffler

Part No. 21489 Warranty Details  
Quantity  Add to Cart

See if this part fits a specific vehicle.

Check Vehicle Fit

Walker® is the only aftermarket exhaust manufacturer in North America with the capability to combine industry-leading coverage with a direct fit OE-style replacement, 100% structural stainless steel muffler, which provides over three times the average lifespan of competitors' aluminized replacement mufflers. Walker® Quiet-FlowSS is available for a vast majority of top-selling domestic and foreign-nameplate applications. In addition to Walker's renowned precision fit, superior flow, and OE-style sound, these mufflers feature 409 stainless steel heads, shell, bushings, louvered tubes and partitions. Walker® Quiet-FlowSS mufflers have a limited lifetime warranty and a 90-day Safe and Sound® guarantee. See www.walkerexhaust.com for warranty and guarantee details.

Product Features:
  • 100% structural stainless steel construction
  • 3X the life expectancy vs. typical aluminized mufflers
  • OE-style louvered tube technology lowers noise level for premium OE-style sound compared to straight perforated tubes
  • Precise OE-style routing & hanger positions for quick & easy installation
  • Comprehensive internal drainage system for corrosion resistance
  • OE-style domed heads help reduce radiated noise compared to flat heads
  • Spun-locked heads to help prevent rupture
  • Limited Lifetime Warranty and exclusive 90-Day Safe & Sound Guarantee
Back To Top
Body Height:4 1/4 in
Body Length:20 in
Body Material:Stainless Steel
Body Width:9 3/4 in
Fitment:Direct OE Replacement
Grade Type:OEM Standard Part
Inlet Configuration:Centered
Inlet Connection Type:2 Bolt Loose Flange w/ Spherial Flare
Inlet Outside Diameter:2.250 in
Inlet Quantity:1
Internal Construction:Combination
Muffler Inlet Diameter 1:2 1/4 in
Muffler Inlet Diameter Designation:Outside Diameter
Muffler Outlet Diameter Designation:Inside Diameter
Muffler Type:Combination
Outlet Configuration:Offset
Outlet Connection Type:Pipe Connection
Outlet Diameter:2 1/4 in
Outlet Inside Diameter:2.250 in
Outlet Quantity:1
Outlet Type:Pipe Connection
Overall Length:26 1/2 in
Shell Diameter Height:4.250 in
Shell Diameter Width:9.750 in
Shell Length:20.000 in
Shell Material:Stainless Steel
Shell Shape:Oval


by PowerReviews
WalkerQuiet-Flow SS Muffler

(based on 3 reviews)

Ratings Distribution

  • 5 Stars



  • 4 Stars



  • 3 Stars



  • 2 Stars



  • 1 Stars




of respondents would recommend this to a friend.

Reviewed by 3 customers

Displaying reviews 1-3

Back to top

(1 of 1 customers found this review helpful)


Works Well


from Northeast

Verified Buyer


  • Good Fit
  • Quiet
  • Second Half 2000 Later


    Best Uses

      Comments about Walker Quiet-Flow SS Muffler:

      Works well for Jeep XJ second half of year 2000 production. Originally picked up muffler for 2000 and found it did not have a flange.

      • Was this a gift?:
      • No

      would buy again if needed


      from hamilton, oh

      About Me Casual Driver

      See all my reviews

      Verified Buyer
      Helpful Reviewer


      • Easy To Install


      • No Increase In Performance

      Best Uses

      • Everyday Driving

      Comments about Walker Quiet-Flow SS Muffler:

      nice muffler


      Solid Muffler, requires welding


      from Cincinnati Ohio

      Verified Buyer


      • Quiet


      • Must weld on tailpipe

      Best Uses

      • Everyday Driving
      • Replacement

      Comments about Walker Quiet-Flow SS Muffler:

      Did not fully research product and realize I would need to weld on the tailpipe. A trip to midas and $120 for install and a new tailpipe solved the problemo.

      • Car & Truck:
      • Casual Driver

      Displaying reviews 1-3

      Back to top

      Do you have questions about this product?


      Ask a question, get answers from real customers and in-house experts. For further assistance, please review your support options on our Contact Us page.

      1 Question | 1 Answer
      Displaying question 1
      • Q:

        Picture shows welded on Flange in Front, Is this accurate?
        Asked on 4/9/2014 by nick

        1 answer



          Hi Nick, glad to assist you! Yes, the inlet connection type for this muffler is 2 bolt loose flange with spherical flare.

          Answered on 4/9/2014 by Vincent from AAP
      Displaying question 1

      Do you have a question about this product? 

      Check out the specials in our monthly flyer.
      Disclaimer We strive to keep all information accurate and up-to-date; however, product availability, pricing, promotions and store hours are subject to change without notice. Please contact Customer Care if you have any questions or corrections.