Quiet-Flow SS Muffler
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Walker Quiet-Flow SS Muffler

Part No. 21504 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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Body Height:7 in
Body Length:22 in
Body Material:Stainless Steel
Body Width:9 in
Finish:Aluminized
Fitment:Direct OE Replacement
Grade Type:OEM Standard Part
Inlet Configuration:Offset
Inlet Connection Type:Pipe Connection
Inlet Inside Diameter:2.000 in
Inlet Quantity:2
Internal Construction:Combination
Muffler Inlet Diameter 1:2 in
Muffler Inlet Diameter Designation:Inside Diameter
Muffler Outlet Diameter Designation:Outside Diameter
Muffler Type:Combination
Outlet Configuration:Offset
Outlet Connection Type:Pipe Connection
Outlet Diameter:2 3/4 in
Outlet Outside Diameter:2.750 in
Outlet Quantity:1
Outlet Type:Pipe Connection
Overall Length:26 in
Reversible:No
Shape:Oval
Shell Diameter Height:7.000 in
Shell Diameter Width:9.000 in
Shell Length:22.000 in
Shell Material:Stainless Steel
Shell Shape:Oval

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1 Question | 1 Answer
Displaying question 1
  • Q:

    Hi is this 21504 muffler really stainless steel or is it aluminized? I sell Walker and never knew that a stainless part was available. Thanks
    Asked on 12/28/2011 by thedeni from Nanaimo bc

    1 answer

    • CUSTOMER CARE

      A:

      The Walker Quiet-Flow SS Stainless Steel Direct-Fit Muffler is made of Aluminized steel. While steel has great strength and durability, it doesn't perform well at high temperatures or in other corrosive environments. Aluminum alloys are coated onto the steel material using a hot-dip method. Aluminized steel exhibits superior corrosion resistance compared with galvanized steel.

      Answered on 12/28/2011 by John the Car-Doc from AAP
Displaying question 1

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