1205 E Main St
Columbus, OH 43205
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At 1205 E Main StColumbus, OH

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Product Information

Product Details
Part No. 21570
Warranty Details (LIMITED LIFETIME REPLACEMENT)
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.

Product Features:
  • CORROSION RESISTANT STAINLESS STEEL -- 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
Specifications
Body Height:
7.000 in

Body Length:
14.000 in

Body Width:
9.000 in

Grade Type:
Premium

Hanger Included:
YES

Inlet Inside Diameter:
1.875 in

Inlet Offset:
1.625

Inlet Quantity:
1

Inlet Type:
Pipe Connection

Outlet Outside Diameter:
2.250 in

Outlet Quantity:
1

Outlet Type:
Tip

Overall Length:
32.500 in

Reversible:
no

Tunable:
no

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4.11 out of 5
9 Customer Reviews
67% of respondents would recommend this to a friend
Ratings Distribution
5 Stars
5
4 Stars
2
3 Stars
1
2 Stars
0
1 Star
1
Pros
2
Easy To Install
1
Great Sound
1
Lightweight
Cons
2
Difficult To Install
1
No Increase In Performance
Best Uses
4
Replacement
3
Everyday Driving
Describe Yourself
2
Auto Enthusiast
2
Mechanic
1
Get-a-away Driver
1
Casual Driver
Reviewed by 9 Customers
Yew
Verified Buyer - Submitted 5 years ago
Worked good
Stainless steel muffler
Verified Buyer - Submitted 7 years ago
So far so good, the old ones rusted through where the intermediate pipe is connected. The new one is stainless steel so hopefully should last longer.
Less than 65dB at idle at mufflers
Verified Buyer - Submitted 7 years ago
Specific to the 2007 Impala SS - These are significantly quieter than the stock mufflers (less than 65dB when between the mufflers) and provide backpressure to the motor that smooths out acceleration and shifting. Pipe extensions are required to reach, and some grinding/welding is necessary to get them to fit onto the bend in the exhaust pipe (a guy posted a video installing these on an LTZ that is well done). The stock mufflers seemed not to have baffles, and then split on top to boot, so the resonance under the car was obnoxious (to me). The car is so quiet after installation (even revved) that the engine and front wheel tread noise is louder (bear this in mind if you like the engine rumble, because you will not get it!). Final note… save your exhaust pipe tips for reuse!
Nice quiet mufflers and at the right price
Verified Buyer - Submitted 8 years ago
Ordered these Mufflers online and they were ready to be picked up in under a half hour
Bottom Line Yes, I would recommend to a friend
Rusted out in 2 Years
Staff Reviewer - Submitted 9 years ago
Rusted out in 2 Years of normal operation I have never left a review before But 2 Years What poor quality
Bottom Line No, I would not recommend to a friend
Displaying Reviews 1 - 5Back to Top

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Why would you recommend a rubber insulator to hold two pieces of muffler pipe together?!
Verified Reply - Heath, ASE Parts Specialist
Thank you for bringing this to our attention, Cake! You are correct, the rubber hanger will not hold these together. The correct method of connecting the two parts is with a 1-7/8" exhaust U-bolt, such as Rol Part No. 517178.
inlet pipe is same size as exhaust pipe. how attach the two together?
Open Reply - John the Car-Doc
You would need a Walker Exhaust Insulator Part No. 35460 between Intermediate Pipe and Muffler Assembly to connect these parts. For any further assistance please feel free to call 1-877-238-2623 and one of our representatives will gladly assist you with any questions or concerns you may have.

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