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Walker Exhaust 21172 Heavy Duty Direct Fit Muffler 4" Inlet/Outlet

(2001-2006 Chevrolet Silverado 2500; 2001-2006 Chevrolet Silverado 3500; 2001-2006 GMC Sierra 2500; 2001-2006 GMC Sierra 3500)

Part of: Walker Exhaust Replacement Mufflers

Other options in this family: Walker Exhaust 21467 Walker Exhaust 21040 Walker Exhaust 21475 Walker Exhaust 22920 Walker Exhaust 21838

Manufacturer

Picture for manufacturer Walker Exhaust

Part Number

21172
6 reviews
Sale Price

$89.89

2 left at this price

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Usually delivered within 2 days

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Live-in-stock inventory

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Fitment guaranteed

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Product Details

The Walker Exhaust 21172 is a heavy-duty direct fit muffler engineered for demanding commercial vehicle applications. Designed to handle the rigors of both on-road and off-road use, this muffler delivers reliable exhaust flow and sound attenuation for hard-working trucks and commercial equipment.

Key Features:

  • Direct fit design for easy installation without modifications
  • 4-inch inlet diameter (ID) and 4-inch outlet diameter (ID) for optimal exhaust flow
  • Heavy-duty construction built to withstand commercial vehicle demands
  • Engineered for high-temperature and high-stress operating conditions
  • Suitable for on-road and off-road commercial vehicle applications

Walker Exhaust provides comprehensive exhaust system solutions from engine to tailpipe, offering quality replacement components for domestic, import, and commercial vehicles. This muffler is designed to restore proper exhaust system function while meeting the performance requirements of heavy-duty applications.

Products specifications

Fits

2001-2006 Chevrolet Silverado 2500; 2001-2006 Chevrolet Silverado 3500; 2001-2006 GMC Sierra 2500; 2001-2006 GMC Sierra 3500

Prop 65

No

Body Material

Steel

Reversible

No

Outlet Quantity

1

Inlet Quantity

1

Finish

Aluminized

Body Length

15

Grade Type

Regular

Universal Or Specific Fit

Universal

Outlet Configuration

Center

Outlet Inside Diameter

4

Overall Length

22

Inlet 1 Inside Diameter

4

Outlet 1 Type

Pipe Connection

Body Height

9

Inlet Configuration

Center

Inlet Inside Diameter

4

Tunable

No

Inlet 1 Type

Pipe Connection

Outlet 1 Inside Diameter

4

Inlet Type

Pipe Connection

Shape

Round

Body Width

9

Muffler Type

Combination

Outlet Type

Pipe Connection

I ordered an Optima battery for my truck after I did a Google search for the battery. Autoplicity was the cheapest on the Web. Even cheaper then eBay. They got me hooked. Thanks Autoplicity

Quick, efficient, professional

Awesome!

Best prices online for a locker and pretty fast shipping too!

I have place my order on line and I am very satisfied with your services , I wil recommend every one to purchase from you

Awesome place to get parts from. Went looking all over the city of houston to find a certain light everyone was sold out tried online two "Huge chain name" places were also sold out. Stumbled on Autoplicity and they had just what I needed!

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