CHEVROLET 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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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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Estimated Ship Date: Today

Dynomax Ultra Flo Welded Round Steel 4 Inch Muffler 17225

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

Part Number: WLK-17225

4.8 out of 5 stars ( 5 )

Estimated Ship Date: Today

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Dynomax Ultra Flo Welded Steel 4 Inch Muffler 17557

Muffler, Ultra Flo Welded, Oval, 4 in. Inlet/4 in. Outlet, Stainless Steel, Chevy, GMC/Hummer, Each

Part Number: WLK-17557

3.17 out of 5 stars ( 6 )

Estimated Ship Date: Today

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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: Mar 4, 2026 if ordered today

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Estimated Ship Date: Mar 4, 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: Today

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Estimated Ship Date: Today

Dynomax Ultra Flo Welded 409 Stainless Steel 2.5 Inch Muffler 53875

Muffler, Ultra Flo Welded, Stainless Steel, Natural, 2.50 in. Offset Inlet, 4.00 in. Center Outlet, 25.50 in. Overall Length, Each

Part Number: WLK-53875

Not Yet Reviewed

Estimated Ship Date: Mar 4, 2026 if ordered today

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Estimated Ship Date: Mar 4, 2026 if ordered today

Dynomax Ultra Flo Welded 409 Stainless Steel 2.5 Inch Muffler 17580

DynoMax Ultra-Flo Welded Mufflers

Part Number: WLK-17580

Not Yet Reviewed

Estimated Ship Date: Mar 3, 2026 if ordered today

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Estimated Ship Date: Mar 3, 2026 if ordered today

AP Exhaust TruckEx Steel 4 Inch Muffler 3894

Muffler, TruckEx, Steel, Aluminized, Chevy, GMC, Each

Part Number: APH-3894

Not Yet Reviewed

Estimated Ship Date: Mar 2, 2026 if ordered today

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Estimated Ship Date: Mar 2, 2026 if ordered today

AP Exhaust TruckEx Steel 4 Inch Muffler 3632

Muffler, TruckEx, Steel, Aluminized, Chevy, Ford, International, Thomas, Each

Part Number: APH-3632

Not Yet Reviewed

Estimated Ship Date: Feb 27, 2026 if ordered today

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Estimated Ship Date: Feb 27, 2026 if ordered today

Need It Sooner? We recommend these similar substitute parts:

Walker Heavy-Duty Steel 4 Inch Muffler 22004

5 out of 5 stars ( 2 )

Estimated Ship Date: Today

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AP Exhaust TruckEx Steel 4 Inch Muffler 3710

Muffler, TruckEx, Steel, Aluminized, Chevy, L6, V8, Each

Part Number: APH-3710

Not Yet Reviewed

Estimated Ship Date: Feb 27, 2026 if ordered today

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Estimated Ship Date: Feb 27, 2026 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: Feb 27, 2026 if ordered today

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Estimated Ship Date: Feb 27, 2026 if ordered today

Dynomax Ultra Flo Welded 409 Stainless Steel 2.5 Inch Muffler 53876

Muffler, Ultra Flo Welded, Stainless Steel, Natural, 2.50 in. Offset Inlet, 4.00 in. Center Outlet, 25.50 in. Overall Length, Each

Part Number: WLK-53876

Not Yet Reviewed

Estimated Ship Date: Mar 4, 2026 if ordered today

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Estimated Ship Date: Mar 4, 2026 if ordered today