Shopping Cart

Your cart is empty.

Your cart is empty.

Walker Quiet-Flow SS 21745 Direct Fit Exhaust Muffler 2.75' Outlet (OD) for Subaru Forester

4.4 (12) Write Review
Free shipping on orders over $29.99

$111.78

$ 49 .99 $49.99

In Stock

About this item

  • COMPATIBILITY – Fits 2009-2009 Subaru Forester; 2010-2010 Subaru Forester; 2011-2011 Subaru Forester; 2012-2012 Subaru Forester; 2013-2013 Subaru Forester; 2008-2008 Subaru Impreza; 2009-2009 Subaru Impreza; 2010-2010 Subaru Impreza; 2011-2011 Subaru Impr
  • GET THE RIGHT PART -- Before purchasing, please check the “Amazon Confirmed Fit” bar to ensure this part will fit your vehicle; enter all vehicle information (year, make, model, engine and trim) for compatibility and check qualifier notes. If the “Amazon Confirmed Fit” bar has an “i” in a blue circle, this product has additional notes. Please hover over the “i” on the bar to see notes before making your purchase
  • 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.


Pamela Shepard
Reviewed in the United States on March 9, 2025
perfect fit .
david w
Reviewed in the United States on February 19, 2025
Well made muffler
A user
Reviewed in the United States on July 14, 2024
I bought a set of mufflers including this Walker 21745 and a Walker 21746. They fit perfectly on my 2010 Subaru Forester. They appear to be smaller than the OEM units, which actually made them easier to install since there was more room to move them around under the car. I think some reviews have said they are louder than the OEM units, but I haven't found that to be the case. They seem to have a little bit more of a low pitched hum than the OEM untis, but I think they sound great.
gary davidson
Reviewed in the United States on December 6, 2024
My Walker Quiet-Flow SS 21745 Direct Fit Exhaust Muffler fit my 2013 Subaru Forester perfectly and runs very quiet.
Ethan Richenberg
Reviewed in the United States on April 17, 2024
Fit great on 2012 Subaru Forester
Normal person in CO
Reviewed in the United States on July 9, 2023
The media could not be loaded.
Leanne Garrett
Reviewed in Canada on December 11, 2023
Exactly what I needed.
ANDRE
Reviewed in Canada on October 2, 2023
was warehouse deal v good condition
J & G Simons
Reviewed in the United States on January 7, 2023
Part of 3 pc exhaust system fairly easy to install. Muffler was identical in shape and fit to the more expensive muffler Walker picked.
robert vaugeois
Reviewed in Canada on July 13, 2021
pour ma Forester 2011
Lloyd MacHattie
Reviewed in Canada on December 9, 2020
SUV came with chrome tips from new. This replacement muffler comes with them welded in place. Keeps the SUV looking original !
Rob7280
Reviewed in the United States on December 8, 2019
Bought this and the Walker 21746 muffler for both sides of my 2009 Subaru Forester when one of my original mufflers developed an exhaust leak. The shape is slightly different, but they look the same installed and fit perfect. The exhaust tip is very nice and better than the plain pipe look tip on the base model Forester that I have. The stainless construction should last a very long time. The hardest part of install was removing the existing bolts at the flange. The existing bolts were so severely corroded I could not get any tool on them and had to grind them off. Once both sides of the bolts were ground off and the muffler removed, I had to drill out the stuck remaining bolt remnant in the exhaust flange on one of them. If your bolts are corroded, I would have a grinder, drill and Dremel tool ready to help get the bolts out. Not too difficult, just took a little time. Overall, took about 2 hours to replace both mufflers. I replaced the exhaust flange gaskets with the Walker gasket 31388 and the flange bolts with the Dorman 03423 bolts. I like these mufflers and recommend them.