1982 Mufflers - 4.00 Outlet Diameter (in.) - In Stock Filter Options - Vendor In Stock Filter Options - Free Shipping on Orders Over $109 at Summit Racing

Walker Heavy-Duty Steel 4 Inch Muffler 21838

Mufflers, Heavy-Duty, Steel, Aluminized, 40.000 in. Overall Length, Mack, Each

Part Number: WLK-21838

3.67 out of 5 stars ( 3 )

Estimated Ship Date: Tomorrow

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Estimated Ship Date: Tomorrow

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: Jan 19, 2026 if ordered today

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Estimated Ship Date: Jan 19, 2026 if ordered today

Walker Heavy Duty Muffler

Part Number: WLK-22936

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Jan 19, 2026 if ordered today

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Estimated Ship Date: Jan 19, 2026 if ordered today

Walker Heavy Duty Muffler

Part Number: WLK-22449

Not Yet Reviewed

Estimated Ship Date: Jan 13, 2026 if ordered today

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Estimated Ship Date: Jan 13, 2026 if ordered today

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: Jan 13, 2026 if ordered today

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Estimated Ship Date: Jan 13, 2026 if ordered today

Muffler, TruckEx, Steel, Aluminized, International, Each

Part Number: APH-3670

Not Yet Reviewed

Estimated Ship Date: Jan 9, 2026 if ordered today

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Estimated Ship Date: Jan 9, 2026 if ordered today