1997 Mufflers - 4.00 Outlet Diameter (in.) - In Stock Filter Options - Vendor In Stock Filter Options - Free Shipping on Orders Over $109 at Summit Racing

Dynomax Ultra Flo Welded Round Steel 4 Inch Muffler 17537

Muffler, Ultra Flo Welded, 4 in. Inlet/4 in. Outlet, Stainless Steel, Each

Part Number: WLK-17537

5.0 out of 5 stars ( 9 )

Estimated Ship Date: Today

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Flowmaster Pro Series Steel 4 Inch Muffler 14020100

Muffler, Pro Series, 4.0 in. Inlet/4.0 in. Outlet, Steel, Black, 24.0 in. Length, Each

Part Number: FLO-14020100

4.86 out of 5 stars ( 7 )

Estimated Ship Date: Today

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Corsa dB Diesel Series 304 Stainless Steel 4 Inch Muffler 8004002

Corsa dB Diesel Series 304 Stainless Steel 4 Inch Muffler 8004002

Muffler, dB Series, Stainless Steel, Dodge, Ram Pickup, Cummins Diesel, 5.9L, Each

Part Number: CSE-8004002

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

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Walker Heavy-Duty Steel 4 Inch Muffler 22643

Mufflers, Heavy-Duty, Steel, Aluminized, 39.000 in. Overall Length, Blue Bird, Chevy, GMC, Each

Part Number: WLK-22643

2.0 out of 5 stars ( 1 )

Estimated Ship Date: Dec 1, 2025 if ordered today

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Estimated Ship Date: Dec 1, 2025 if ordered today

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Walker Heavy-Duty Steel 4 Inch Muffler 21969

4.75 out of 5 stars ( 3 )

Estimated Ship Date: Nov 13, 2025

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Walker Heavy-Duty Steel 4 Inch Muffler 22642

Walker Heavy Duty Muffler

Part Number: WLK-22642

Not Yet Reviewed

Estimated Ship Date: Dec 1, 2025 if ordered today

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Estimated Ship Date: Dec 1, 2025 if ordered today

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: Today

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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: Dec 1, 2025 if ordered today

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Estimated Ship Date: Dec 1, 2025 if ordered today

AP Exhaust TruckEx Steel 4 Inch Muffler 3891

Not Yet Reviewed

Estimated Ship Date: Dec 1, 2025

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AP Exhaust TruckEx Steel 4 Inch Muffler 3871

Muffler, TruckEx, Steel, Aluminized, Dodge, Ford, Each

Part Number: APH-3871

Not Yet Reviewed

Estimated Ship Date: Dec 1, 2025 if ordered today

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Estimated Ship Date: Dec 1, 2025 if ordered today

AP Exhaust TruckEx Steel 3.5 Inch Muffler 3716

Muffler, TruckEx, Steel, Aluminized, Genesis Transit, International, Each

Part Number: APH-3716

Not Yet Reviewed

Estimated Ship Date: Nov 28, 2025 if ordered today

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Estimated Ship Date: Nov 28, 2025 if ordered today

AP Exhaust TruckEx Steel 4 Inch Muffler 4218

Muffler, TruckEx, Round, 4.00 in. Center Inlet/Outlet, Chevrolet, GMC, Each

Part Number: APH-4218

Not Yet Reviewed

Estimated Ship Date: Dec 1, 2025 if ordered today

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Estimated Ship Date: Dec 1, 2025 if ordered today

AP Exhaust TruckEx Steel 3.5 Inch Muffler 3851

Muffler, TruckEx, Steel, Aluminized, International, L4, L6, V8, Each

Part Number: APH-3851

Not Yet Reviewed

Estimated Ship Date: Dec 1, 2025 if ordered today

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Estimated Ship Date: Dec 1, 2025 if ordered today