Walker Heavy-Duty Mufflers

4.29 out of 5 stars 28 Customer Reviews

Walker offers a complete lineup of exhaust products for today's heavy-duty and commercial vehicles, including these heavy-duty mufflers. They're engineered to reduce in-cab and exterior engine noise, and feature an all-welded construction from heavy-gauge, all-aluminized steel. Their re-metallized seams provide additional corrosion resistance, improving appearance and durability. They come in a range of styles and sizes, to serve as an economical replacement for your worn or damaged original equipment.

Showing In Stock Items. Show All 22 Items.

Results 1 - 14 of 14

Walker Heavy-Duty Steel 4 Inch Muffler 21969

Muffler, Heavy-Duty, Round, Steel, Aluminized, 4.00 in. Offset Inlet/Outlet, 31.50 in. Overall Length, Each

Part Number: WLK-21969

4.67 out of 5 stars ( 3 )

Estimated Ship Date: Today

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Walker Heavy-Duty Steel 4 Inch Muffler 22572

Muffler, Heavy Duty, 4 in. Inlet/4 in. Outlet, Stainless Steel, Natural, Each

Part Number: WLK-22572

4.0 out of 5 stars ( 4 )

Estimated Ship Date: Today

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Walker Heavy-Duty Steel 4 Inch Muffler 21172

Muffler, Heavy Duty, 4 in. Inlet/4 in. Outlet, Stainless Steel, Each

Part Number: WLK-21172

3.75 out of 5 stars ( 4 )

Estimated Ship Date: Today

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Walker Heavy-Duty Steel 4 Inch Muffler 22004

Muffler, Heavy-Duty, Oval, Steel, Aluminized, 4.00 in. Offset Inlet/Outlet, 34.00 in. Overall Length, Each

Part Number: WLK-22004

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

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Walker Heavy-Duty Steel 5 Inch Muffler 22914

Muffler, Heavy-Duty, 5.00 in. Center Inlet/Outlet, 40.00 in. Overall Length, Steel, Aluminized, Each

Part Number: WLK-22914

Not Yet Reviewed

Estimated Ship Date: Oct 15, 2025 if ordered today

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Estimated Ship Date: Oct 15, 2025 if ordered today

Walker Heavy-Duty Steel 4 Inch Muffler 22941

Walker Heavy Duty Muffler

Part Number: WLK-22941

Not Yet Reviewed

Estimated Ship Date: Oct 15, 2025 if ordered today

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Estimated Ship Date: Oct 15, 2025 if ordered today

Need It Sooner? We recommend these similar substitute parts:

AP Exhaust TruckEx Steel 4 Inch Muffler 3712

Not Yet Reviewed

Estimated Ship Date: Oct 13, 2025

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Walker Heavy-Duty Steel 4 Inch Muffler 21833

Muffler, Heavy-Duty, Oval, Steel, Aluminized, 4.00 in. Offset Inlet/Outlet, 36.00 in. Overall Length, Each

Part Number: WLK-21833

4.5 out of 5 stars ( 2 )

Estimated Ship Date: Oct 14, 2025 if ordered today

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Estimated Ship Date: Oct 14, 2025 if ordered today

Walker Heavy-Duty Steel 5 Inch Muffler 22940

Muffler, Heavy-Duty, 5.00 in. Center Inlet/Outlet, 51.00 in. Overall Length, Steel, Aluminized, Each

Part Number: WLK-22940

Not Yet Reviewed

Estimated Ship Date: Oct 14, 2025 if ordered today

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Estimated Ship Date: Oct 14, 2025 if ordered today

Walker Heavy-Duty Steel 4 Inch Muffler 22899

Walker Heavy Duty Muffler

Part Number: WLK-22899

Not Yet Reviewed

Estimated Ship Date: Oct 13, 2025 if ordered today

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Estimated Ship Date: Oct 13, 2025 if ordered today

Walker Heavy-Duty Steel 4 Inch Muffler 22936

Walker Heavy Duty Muffler

Part Number: WLK-22936

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Oct 14, 2025 if ordered today

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Estimated Ship Date: Oct 14, 2025 if ordered today

Need It Sooner? We recommend these similar substitute parts:

AP Exhaust TruckEx Steel 4 Inch Muffler 3891

Not Yet Reviewed

Estimated Ship Date: Oct 13, 2025

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Walker Heavy-Duty Steel 4 Inch Muffler 22449

Walker Heavy Duty Muffler

Part Number: WLK-22449

Not Yet Reviewed

Estimated Ship Date: Oct 13, 2025 if ordered today

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Estimated Ship Date: Oct 13, 2025 if ordered today

AP Exhaust TruckEx Steel 4 Inch Muffler 3710

Not Yet Reviewed

Estimated Ship Date: Oct 13, 2025

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Walker Heavy-Duty Steel 2.25 Inch Muffler 22382

Muffler, Heavy-Duty, 2.25 in. Offset Inlet/Outlet, Steel, Aluminized, 30.00 in. Overall Length, Dodge, Ford, Each

Part Number: WLK-22382

4.5 out of 5 stars ( 2 )

Estimated Ship Date: Today

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Walker Heavy-Duty Steel 4 Inch Muffler 22888

Mufflers, Heavy-Duty, Steel, Aluminized, 4.00 in. Offset Inlet/Outlet, 42.000 in. Overall Length, Ford, 5.9L Diesel, 8.2L Diesel, Each

Part Number: WLK-22888

Not Yet Reviewed

Estimated Ship Date: Oct 14, 2025 if ordered today

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Estimated Ship Date: Oct 14, 2025 if ordered today

Walker Heavy-Duty Steel 4 Inch Muffler 22789

Walker Heavy Duty Muffler

Part Number: WLK-22789

Not Yet Reviewed

Estimated Ship Date: Oct 15, 2025 if ordered today

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Estimated Ship Date: Oct 15, 2025 if ordered today

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