See Details

Up to 66% Off Tire Clearance

Close (X)

Up to 66% Off Tire Clearance
Clearance pricing on select in-stock tires only. Prices will show as marked down with a strike through price. Discount eligible tires will be identified on product detail and search result pages. All other tires, fleet and special order tires are excluded from this offer.

Zoom [+]
  • Part #: 21565|
  • SKU: 1359800

Not Available

Pay in Store Available

    • 100% structural stainless steel construction
    • 3X the life expectancy vs. typical aluminized mufflers
PayPal available for online purchases. Major credit cards accepted online and in store. Pay online, in-store or take advantage of our Pep Boys credit card. Learn more and see additional details in cart.

Walker Quiet-Flow Muffler

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 for warranty and guarantee details.
  • 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 perf. 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


Rated 4 out of 5 by 16 reviewers.
Rated 4 out of 5 by Good muffler, it was mostly quiet I cant tell if there is any difference in engine performance. I wanted a quiet muffler, since none of my neighbors appreciate a noisy obnoxious truck come and go all day and night. Turbo mufflers are cheaper, but the noise is just too much. The muffler isnt as quiet as stock brand new factory, but it gets the job done. October 20, 2016
Rated 5 out of 5 by Fit great and very quiet muffler. New muffler was a little smaller in size, but fit great and the truck hardly makes a sound now. Hope it lasts longer than the OEM one. November 2, 2015
Rated 5 out of 5 by Fit Perfectly, Nice and Quiet Old muffler rusted out, was able to easily replace it with the Walker muffler, fit perfectly. My Jeep is much more quiet now. October 9, 2015
Rated 4 out of 5 by Seems to be Ok...... This replaced my original stock muffler. It was very easy to replace, and the only issue I have had was that the clamp came loose even after tightening it as much as It would go the first time. If it comes loose again, I may use some lock tite on it. The muffler itself is very quiet and sounds great in spite of the fact that whoever had the car before I did took off the resonator. September 6, 2015
Rated 2 out of 5 by pipe too small for resonator it should have been suggested to replace the connect to my original resonator I had to get a reducer pipe to connect the smaller tailpipe to the larger resonator. May 31, 2015
Rated 1 out of 5 by JUNK - typical aftermarket garbage Inlet side pipe is the exact same diameter as the exhaust pipe- DOES NOT just slip over and clamp like the oem one. Had to weld a sleeve over it to work properly. Waste of time and money - should of just got the oem one ...... December 28, 2014
Rated 5 out of 5 by Installation went smoothly. The real test will be durability and time will show if this muffler lasts 5 years or more. December 11, 2014
Rated 5 out of 5 by very happy as described easy fit I bought muffler and resonator top quality November 28, 2014
  • 2016-10-27 T09:59:07.004-05:00
  • bvseo_lps, prod_bvrr, vn_prr_5.6
  • cp-1, bvpage1
  • co_hasreviews, tv_16, tr_16
  • loc_en_US, sid_1359800, prod, sort_default
2 next>>