Mufflers - 6 X 4 Drivetrain - In Stock Filter Options - Vendor In Stock Filter Options - Free Shipping on Orders Over $109 at Summit Racing

Walker School Bus Steel 5 Inch Muffler 22920

Muffler, Replacement, 5.0 in. Inlet/5.0 in. Outlet, 51.0 in. Length, Steel, Aluminized, Bluebird School Bus

Part Number: WLK-22920

5.0 out of 5 stars ( 6 )

Estimated Ship Date: Today

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Walker Noisebreaker Steel 5 Inch Muffler 22980

Walker Noisebreaker Universal Muffler

Part Number: WLK-22980

5.0 out of 5 stars ( 7 )

Estimated Ship Date: Today

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Walker Mega-Flow Steel 5 Inch Muffler 22963

Muffler, Mega-Flow, Round, Chambered, Steel, Aluminized, 5 in. Center Inlet and Outlet, 51 in. Length, Each

Part Number: WLK-22963

4.67 out of 5 stars ( 9 )

Estimated Ship Date: Jan 5, 2026 if ordered today

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Estimated Ship Date: Jan 5, 2026 if ordered today

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: Jan 6, 2026 if ordered today

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Estimated Ship Date: Jan 6, 2026 if ordered today

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AP Exhaust TruckEx Steel 4 Inch Muffler 3632

Not Yet Reviewed

Estimated Ship Date: Jan 5, 2026

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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: Jan 5, 2026 if ordered today

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Estimated Ship Date: Jan 5, 2026 if ordered today

Walker Heavy-Duty Steel 4 Inch Muffler 22449

Walker Heavy Duty Muffler

Part Number: WLK-22449

Not Yet Reviewed

Estimated Ship Date: Jan 6, 2026 if ordered today

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Estimated Ship Date: Jan 6, 2026 if ordered today

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AP Exhaust TruckEx Steel 4 Inch Muffler 3710

Not Yet Reviewed

Estimated Ship Date: Jan 5, 2026

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Walker Heavy-Duty Steel 4 Inch Muffler 22941

Walker Heavy Duty Muffler

Part Number: WLK-22941

Not Yet Reviewed

Estimated Ship Date: Jan 7, 2026 if ordered today

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Estimated Ship Date: Jan 7, 2026 if ordered today

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AP Exhaust TruckEx Steel 4 Inch Muffler 3712

Not Yet Reviewed

Estimated Ship Date: Jan 5, 2026

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Walker Replacement Steel 5 Inch Muffler 22552

Muffler, Replacement, 5 in. Inlet/5 in. Outlet, Steel, Aluminized, Each

Part Number: WLK-22552

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Jan 5, 2026 if ordered today

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Estimated Ship Date: Jan 5, 2026 if ordered today

AP Exhaust MSL Maximum Steel 2.5 Inch Muffler 700365

AP Exhaust MSL Maximum Steel 2.5 Inch Muffler 700365

Mufflers, MSL Maximum, Steel, Aluminized, Perforated Tube, Oval Case, Chevrolet, GMC, Each

Part Number: APH-700365

Not Yet Reviewed

Estimated Ship Date: Jan 5, 2026 if ordered today

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Estimated Ship Date: Jan 5, 2026 if ordered today

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Walker Direct-Fit SoundFX Steel 2.5 Inch Muffler 18906

5 out of 5 stars ( 3 )

Estimated Ship Date: Today

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AP Exhaust OE Replacement Steel 2.5 Inch Muffler 2452

Muffler, OE Replacement, Steel, Aluminized, Chevy, GMC, Each

Part Number: APH-2452

Not Yet Reviewed

Estimated Ship Date: Jan 5, 2026 if ordered today

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Estimated Ship Date: Jan 5, 2026 if ordered today

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Walker Quiet-Flow 3 Steel 2.5 Inch Muffler 21400

4.25 out of 5 stars ( 3 )

Estimated Ship Date: Today

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Walker Heavy-Duty Steel 4 Inch Muffler 22962

Walker Heavy Duty Muffler

Part Number: WLK-22962

Not Yet Reviewed

Estimated Ship Date: Jan 5, 2026 if ordered today

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Estimated Ship Date: Jan 5, 2026 if ordered today