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Walker Exhaust 21165 Heavy-Duty Aluminized Steel Muffler 5" Inlet 5" Outlet

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

21165
5 reviews
Sale Price

$277.97

1 left at this price

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Usually delivered within 2 days

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No Hassle Returns

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Live-in-stock inventory

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Fitment guaranteed

Fitment guaranteed

Product Details

The Walker Exhaust 21165 is a heavy-duty, direct-fit replacement muffler engineered for Class 7 and Class 8 commercial trucks and on/off-road vehicles. Built from heavy-gauge aluminized steel with an all-welded construction, this muffler is designed to meet or exceed OEM standards in both performance and durability.

Key Features:

  • 5.00" Offset Inlet (I.D.) / 5.00" Side Outlet (I.D.) for large-bore commercial exhaust systems
  • 39.00" overall length with a round body cross-section
  • Heavy-gauge aluminized steel construction with re-metallized seams for superior corrosion resistance
  • Internally welded baffles and bridge-constructed inlet/outlet connections for improved vibration resistance
  • Engineered to reduce in-cab and exterior engine noise, including highway drone
  • Delivers up to 30% reduction in backpressure without sacrificing acoustic performance
  • Designed specifically for Class 7–8 heavy-duty vehicles
  • Made in the USA

The Walker 21165 is sold individually and is part of Walker's comprehensive commercial vehicle exhaust lineup, providing a reliable, economical replacement for worn or damaged original equipment mufflers.

Products specifications

Prop 65

No

Body Material

Steel

Reversible

No

Outlet Quantity

1

Overall Length

39

Inlet Quantity

1

Finish

Aluminized

Grade Type

Regular

Universal Or Specific Fit

Universal

Body Length

36

Outlet Inside Diameter

5

Outlet 1 Type

Pipe Connection

Inlet Configuration

Offset

Inlet Inside Diameter

5

Inlet 1 Inside Diameter

5

Body Height

11

Outlet 1 Inside Diameter

5

Tunable

No

Inlet 1 Type

Pipe Connection

Body Width

11

Inlet Type

Pipe Connection

Shape

Round

Muffler Type

Combination

Outlet Type

Pipe Connection

Outlet Configuration

Body Side

Inlet Offset

2.5

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I am pleased with Autoplicity. There was a miscommunication on shipment, but after a phone call, everything was handled. Looking forward to my parts coming in. Thanks guys!

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