Walker Exhaust

Walker Exhaust 21478 Muffler-quiet-flowss-dome

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SKU:
21409935
MPN:
21478_100
Availability:
Usually ships the same or next business day. In stock at our PA warehouse.
Shipping:
Calculated at Checkout
Stock Update:
02/12/2026 06:45:15 AM PST
$104.96
Stock Update:
02/12/2026 06:45:15 AM PST

Description

This item is brand-new, factory sealed.

Walker Quiet-Flow SS 21478 Direct Fit Exhaust Muffler 2.25" Inlet (ID) 2.25" Outlet (ID) for Chevrolet Colorado
  • COMPATIBILITY Fits 2001-2001 Ford Explorer Sport Trac; 2002-2002 Ford Explorer Sport Trac; 2003-2003 Ford Explorer Sport Trac; 2004-2004 Ford Explorer Sport Trac; 2005-2005 Ford Explorer Sport Trac
  • GET THE RIGHT PART -- Before purchasing, research to ensure that the part will fit your vehicle; enter all vehicle information (year, make, model, engine and trim) for compatibility and check qualifier notes
  • STAINLESS STEEL INHIBITS CORROSION -- The only broad-market muffler with 100% stainless-steel construction that delivers longer life versus aluminized mufflers while an internal drainage system reduces moisture collection
  • EASY TO INSTALL -- Direct-fit bolt-on replacement solution with OE-style hangers, brackets and pipe routings for easy installation and doesn't require specialized fabrication and/or welding
  • 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
  • PREMIUM ACOUSTIC CONTROL -- OE-style louvered tubes lower noise levels while OE-style domed heads help reduce radiated noise for premium factory-style sound quality compared to straight perforated tubes
  • DESIGN VALIDATED -- Acoustic and flow tested for quality OE-style sound you can count on
  • BUY WITH CONFIDENCE -- Comes with Walker's limited lifetime warranty and exclusive 90-Day Safe and Sound Guarantee. Visit Walkerexhaust.com for details.
  • Brand: ?Walker
  • Item dimensions L x W x H: ?31 x 10 x 7.8 inches
  • Vehicle Service Type: ?Car
  • Inlet Connection Size: ?2.25 Inches
  • UPC: ?086387214780
  • Manufacturer: ?Tenneco (Dynomax, Walker, Thrush)
  • Global Trade Identification Number: ?00086387214780
  • Item Weight: ?9 pounds
  • Product Dimensions: ?31 x 10 x 7.8 inches
  • Item model number: ?21478
  • Manufacturer Part Number: ?21478

The only broad-market muffler with 100% stainless-steel construction, Walker Quiet-Flow SS mufflers feature precision fit, superior flow and OE-style sound. Quiet-Flow SS mufflers are available for most domestic and import vehicles.

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Warranty Information

All Items are Brand New, Factory Sealed and come with a standard warranty. [Read our policies]
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Walker Exhaust 21478 Muffler-quiet-flowss-dome
$104.96