1998 Mufflers - 4.00 Inlet Diameter (in.) - In Stock Filter Options - Vendor In Stock Filter Options - Free Shipping on Orders Over $109 at Summit Racing

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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Estimated Ship Date: Tomorrow

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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Estimated Ship Date: Tomorrow

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: Mar 4, 2026 if ordered today

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Estimated Ship Date: Mar 4, 2026 if ordered today

AP Exhaust TruckEx Steel 4 Inch Muffler 3715

Muffler, TruckEx, Steel, Aluminized, International, Each

Part Number: APH-3715

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 3871

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

Part Number: APH-3871

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 3712

Muffler, TruckEx, Steel, Aluminized, Blue Bird, 5.9, 6.6, 7.2, 8.3L, Each

Part Number: APH-3712

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 4225

Mufflers, TruckEx, Steel, Aluminized, Round Case, 4.00 in. Offset Inlet/Outlet, 43.00 in. Overall Length, Freightliner, Each

Part Number: APH-4225

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

BRExhaust Direct-Fit Steel 4 Inch Muffler 100-5360

Mufflers, Direct-Fit, 4.00 in. Inlet/3.00 in. Outlet, Steel, Aluminized, Round Case, 33.00 in. Overall Length, Dodge, Each

Part Number: BRE-100-5360

Not Yet Reviewed

Estimated Ship Date: Mar 6, 2026 if ordered today

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Estimated Ship Date: Mar 6, 2026 if ordered today

AP Exhaust TruckEx Steel 4 Inch Muffler 4251

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

Part Number: APH-4251

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Mar 2, 2026 if ordered today

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Estimated Ship Date: Mar 2, 2026 if ordered today