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Quiet-Flow SS Stainless Steel Direct-Fit Muffler
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Quiet-Flow SS Stainless Steel Direct-Fit Muffler by Walker (part#21421) / Mufflers

Part No. 21421 Warranty  
$160.99
Quantity  Add Quiet-Flow SS Stainless Steel Direct-Fit Muffler To Cart

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Brand: Walker
Advance Auto Parts Part#: 20290075
Suitable vehicles: Click to find if this product can be used with your vehicle:
  • Chevrolet
    • Trailblazer EXT
      • 2004
        • 2004 Chevrolet Trailblazer EXT (4.2L 256CI L6 FI VIN: S)
      • 2003
        • 2003 Chevrolet Trailblazer EXT (4.2L 256CI L6 FI VIN: S)
      • 2002
        • 2002 Chevrolet Trailblazer EXT (4.2L 256CI L6 FI VIN: S)
    • Trailblazer EXT LS
      • 2005
        • 2005 Chevrolet Trailblazer EXT LS (4.2L 256CI L6 FI VIN: S)
    • Trailblazer EXT LT
      • 2005
        • 2005 Chevrolet Trailblazer EXT LT (4.2L 256CI L6 FI VIN: S)
  • GMC
    • Envoy XL
      • 2004
        • 2004 GMC Envoy XL (4.2L 256CI L6 FI VIN: S)
      • 2003
        • 2003 GMC Envoy XL (4.2L 256CI L6 FI VIN: S)
      • 2002
        • 2002 GMC Envoy XL (4.2L 256CI L6 FI VIN: S)
    • Envoy XL SLE
      • 2005
        • 2005 GMC Envoy XL SLE (4.2L 256CI L6 FI VIN: S)
    • Envoy XL SLT
      • 2005
        • 2005 GMC Envoy XL SLT (4.2L 256CI L6 FI VIN: S)


Walker, one of the core brands of Tenneco, builds upon its worldwide OE partnerships and manufacturing facilities to deliver OE look, fit and dependability. Walker's worldwide network of full-service engineering and development centers span five continents and allows Walker to bring new products and the latest technologies to the market faster. With this world-class support, Walker possesses the technical excellence needed to meet today's needs while developing solutions to tomorrow's challenges.

Walker has been a driving force of innovation over the past century. The brand's history of innovative engineering includes such "firsts" as the louvered-tube muffler, stainless steel muffler, aluminized exhaust products, and chambered-tube mufflers. These advantages continue today in virtually every premium Walker exhaust and emission control component. For Walker, innovation drives performance and satisfied customers.

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Finish:Aluminized
Inlet Configuration:Centered
Inlet Outside Diameter:2.500 in
Inlet Quantity:1
Internal Construction:Combination
OE Replacement:Direct OE Replacement
Outlet Configuration:Offset
Outlet Inside Diameter:2.500 in
Outlet Quantity:1
Outlet Type:Pipe Connection
Overall Length:44.380 in
Reversible:No
Shell Diameter Height:5.500 in
Shell Diameter Width:11.000 in
Shell Length:27.000 in
Shell Material:Stainless Steel
Shell Shape:Oval

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