Quiet-Flow SS Muffler
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Walker Quiet-Flow SS Muffler

Part No. 21399 Warranty Details  

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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
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Shape:Oval
Shell Diameter Height:5.500 in
Shell Diameter Width:11.000 in
Shell Length:15.000 in
Shell Material:Stainless Steel
Shell Shape:Oval
Body Height:5 1/2 in
Body Length:15 in
Body Material:Stainless Steel
Body Width:11 in
Finish:Aluminized
Fitment:Direct OE Replacement
Grade Type:OEM Standard Part
Inlet Configuration:Offset
Inlet Connection Type:Pipe Connection
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:Outside Diameter
Muffler Type:Combination
Outlet Configuration:Centered
Outlet Connection Type:Tip - Welded Spout
Outlet Diameter:2 1/4 in
Outlet Outside Diameter:2.250 in
Outlet Quantity:1
Outlet Type:Tip - Welded Spout
Overall Length:29 in
Reversible:No

REVIEW SNAPSHOT®

by PowerReviews
WalkerQuiet-Flow SS Muffler
 
4.8

(based on 5 reviews)

Ratings Distribution

  • 5 Stars

     

    (4)

  • 4 Stars

     

    (1)

  • 3 Stars

     

    (0)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (0)

100%

of respondents would recommend this to a friend.

Pros

  • Easy to install (4)

Cons

No Cons

Best Uses

  • Replacement (4)
  • Everyday driving (3)

Reviewed by 5 customers

Displaying reviews 1-5

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5.0

Definitely a quality muffler.

By 

from Granger, IN

Verified Buyer

Pros

  • Very quiet, and heavy duty construction.

Cons

    Best Uses

      Comments about Walker Quiet-Flow SS Muffler:

      Perfect fit for 2004 Impala

      • Was this a gift?:
      • No

      (2 of 4 customers found this review helpful)

       
      5.0

      Great Product For The Money!

      By 

      from Wall,Pennsylvania

      About Me Casual Driver

      Verified Buyer

      Pros

      • Easy To Install
      • Great Sound
      • Increases Power
      • Lightweight

      Cons

        Best Uses

        • Everyday Driving
        • Replacement
        • Restoration

        Comments about Walker Quiet-Flow SS Muffler:

        This has a great warranty,and should last the life of the vehicle. I would recommend it over the ones that only give you a 1 year warranty,because those do not last much more than that.

        (2 of 4 customers found this review helpful)

         
        5.0

        good fit

        By 

        from pittsburgh pa

        About Me Casual Driver

        See all my reviews

        3 or more reviews submitted

        Pros

        • Easy To Install
        • Fits Nice

        Cons

        • Inlet Whole A Little Big

        Best Uses

        • Everyday Driving
        • Replacement

        Comments about Walker Quiet-Flow SS Muffler:

        is a nice replacement for the OEM part

        (2 of 4 customers found this review helpful)

         
        4.0

        Fits perfectly

        By 

        from Lake Luzerne, NY

        Verified Buyer

        Pros

        • Easy To Install

        Cons

          Best Uses

          • Replacement

          Comments about Walker Quiet-Flow SS Muffler:

          Fit the exhaust pipe and hanger perfectly.

          • Car & Truck:
          • Casual Driver

          (1 of 3 customers found this review helpful)

           
          5.0

          fit like a glove

          By 

          from Montpelier,OH

          Verified Buyer

          Pros

          • Easy To Install
          • Great Sound

          Cons

            Best Uses

            • Everyday Driving
            • Replacement

            Comments about Walker Quiet-Flow SS Muffler:

            nice and quite

            Displaying reviews 1-5

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