Mufflers - 4.00 Inlet Diameter (in.) - 4WD Drivetrain - 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: Tomorrow

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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: Tomorrow

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Walker Quiet-Flow SS Steel 4 Inch Muffler 54637

Muffler, Quiet-Flow SS, Oval, Offset/Offset, Stainless Steel, Natural, Dodge, Each

Part Number: WLK-54637

4.52 out of 5 stars ( 21 )

Estimated Ship Date: Tomorrow

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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: Tomorrow

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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: Tomorrow

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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: Tomorrow

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Walker Quiet-Flow SS 409 Stainless Steel 4 Inch Muffler 21649

Mufflers, Quiet-Flow SS, Stainless Steel, Natural, 17.000 in. Overall Length, Dodge, Ram, Each

Part Number: WLK-21649

3.67 out of 5 stars ( 3 )

Estimated Ship Date: Tomorrow

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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: Tomorrow

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AP Exhaust OE Replacement Steel 4 Inch Muffler 2519

AP Exhaust OE Replacement Steel 4 Inch Muffler 2519

Muffler, OE Replacement, Steel, Aluminized, Dodge, 5.9L, Diesel, Each

Part Number: APH-2519

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Jan 29, 2026 if ordered today

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Estimated Ship Date: Jan 29, 2026 if ordered today

Walker Quiet-Flow Steel 4 Inch Muffler 21443

Muffler, Quiet-Flow SS, Round, Turbo-style, Steel, Aluminized, Dodge, 5.9L Diesel, Each

Part Number: WLK-21443

4.8 out of 5 stars ( 5 )

Estimated Ship Date: Feb 2, 2026 if ordered today

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Estimated Ship Date: Feb 2, 2026 if ordered today

AP Exhaust MSL Maximum Steel 4 Inch Muffler 700476

Muffler, MSL, Oval, Baffled, Steel, Aluminized, 4.00 in. Offset Inlet/Outlet, 39.00 in. Overall Length, Each

Part Number: APH-700476

4.0 out of 5 stars ( 1 )

Estimated Ship Date: Jan 29, 2026 if ordered today

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Estimated Ship Date: Jan 29, 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: Jan 30, 2026 if ordered today

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Estimated Ship Date: Jan 30, 2026 if ordered today

BRExhaust Direct-Fit Steel 4 Inch Muffler 100-8462

Mufflers, Direct-Fit, 4.00 in. Inlet/Outlet, Steel, Aluminized, Oval Case, 37.50 in. Overall Length, Dodge, Each

Part Number: BRE-100-8462

Not Yet Reviewed

Estimated Ship Date: Feb 3, 2026 if ordered today

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Estimated Ship Date: Feb 3, 2026 if ordered today