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Walker Quiet-Flow SS 21539 Direct Fit Exhaust Muffler 2.5' Inlet (ID) 2.5' Outlet (ID) for Ford F-150

Free shipping on orders over $29.99

$132.35

$ 55 .99 $55.99

In Stock

About this item

  • COMPATIBILITY – Fits 2004-2004 Ford F-150; 2005-2005 Ford F-150; 2006-2006 Ford F-150; 2007-2007 Ford F-150; 2008-2008 Ford F-150; 2006-2006 Lincoln Mark LT; 2007-2007 Lincoln Mark LT; 2008-2008 Lincoln Mark LT
  • 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.


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.


Yeah
Reviewed in Canada on February 3, 2025
Cheap quality, not a direct fit did not last.
george shephard
Reviewed in the United States on January 19, 2025
I didn't think an aftermarket product could be quieter than OEM, but I just learned about exhaust brands and composition. My truck is a 5.4 litre and this muffler is extremely quiet. Starts quiet, runs quiet. The product narrative is spot on.
John Brazelton
Reviewed in the United States on January 6, 2024
Love the muffler made my truck super quiet
I'm Over Engineered
Reviewed in the United States on July 3, 2023
True to description, this muffler is super quiet and the dimensions were exactly as described. I easily welded it to my pipes, both new and reused pipes. (Amateur/shade-tree welder here, don't judge my bead ha) Stainless build should last long too.Hope this is helpful and I would definitely buy this muffler again.
R.L.
Reviewed in the United States on December 6, 2023
For the most part happy with the muffler. Only thing that cost them a star is that the outlet is in a different location than the original. Had to get a tail pipe from the local NAPA (part number 55424) to finish the job. NAPA had a muffler configured the exact same way as this replacement, believe this to be how walker makes them, great way for them to make a little extra on a tail pipe. I have a 08 F150 4.6l with a 144 W/B. Other than that, sounds great at a great price.
Carlos P.
Reviewed in the United States on December 7, 2022
Perfect fit and great results.
ArtiBrico
Reviewed in Canada on March 19, 2020
N'est pas en acier inoxydable comme mentionné.
Stanley A. Helms
Reviewed in the United States on October 4, 2019
Not really sure the durability of this muffler.......at this point i am concerned. it is smaller/shorter than the OEM muffler, not as heavy duty. too early to tell at this point.
Greg willits
Reviewed in Canada on August 2, 2018
Fit very well. My pipe coming out front of muffler was rotten so also orderd that pipe with the bends in it. And also replaced the extension pipe between cats and the curved pipe coming out of muffler. My tailpipe was fine so I reused it
Bababooey
Reviewed in the United States on December 9, 2018
Decent muffler for the money, quiet and fit well. Only complaint I have is that it is already developing surface rust after only 2 weeks. I thought stainless steel didn't rust!
mark
Reviewed in the United States on September 10, 2016
I bought this muffler and a tail pipe here together . Shipped fast -- no damage and went right together --no issues . Good price too .
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