Mufflers - 3.50 Inlet Diameter (in.) - 4.00 Outlet Diameter (in.)

Walker School Bus Steel 3.5 Inch Muffler 22551

Muffler, School Bus, 3 1/2 in. Inlet/4 in. Outlet, Steel, Aluminized, Each

Part Number: WLK-22551

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

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Walker Heavy-Duty Steel 3.5 Inch Muffler 21074

Muffler, Heavy-Duty, Round, Steel, Aluminized, 3.500 in. Offset Inlet, 4.000 in. Side Outlet, 34.00 in. Overall Length, Universal, Each

Part Number: WLK-21074

Not Yet Reviewed

Estimated Ship Date: Nov 23, 2026 if ordered today

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Estimated Ship Date: Nov 23, 2026 if ordered today

Vibrant Performance Titanium Titanium 3.5 Inch Muffler 17565

Muffler, Round, Titanium, Natural, 3.50 in. Center Inlet, 4.00 in. Center Outlet, 17.00 in. Overall Length, Each

Part Number: VPE-17565

Not Yet Reviewed

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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 11, 2026 if ordered today

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Estimated Ship Date: Nov 11, 2026 if ordered today

Need It Sooner? We recommend these similar substitute parts:

Walker School Bus Steel 3.5 Inch Muffler 22551

5 out of 5 stars ( 2 )

Estimated Ship Date: Today

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AP Exhaust TruckEx Steel 3.5 Inch Muffler 3703

AP Exhaust TruckEx Steel 3.5 Inch Muffler 3703

Muffler, TruckEx, Steel, Aluminized, International, Each

Part Number: APH-3703

Not Yet Reviewed

Estimated Ship Date: Nov 11, 2026 if ordered today

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Estimated Ship Date: Nov 11, 2026 if ordered today

SpeedFactory Racing LT-5 304 Stainless Steel 3.5 Inch Muffler SF-04-102

Muffler, 3.50 in. Inlet, 4.00 in. Turndown Outlet, 16.00 in. Overall Length, Round, Stainless Steel, Polished, Each

Part Number: SFH-SF-04-102

Not Yet Reviewed

Estimated Ship Date: Nov 30, 2026 if ordered today

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Estimated Ship Date: Nov 30, 2026 if ordered today

Walker Replacement Steel 3.5 Inch Muffler 22604

Muffler, Replacement, 3 1/2 in. Inlet/4 in. Outlet, Steel, Aluminized, Each

Part Number: WLK-22604

Not Yet Reviewed

Estimated Ship Date: Nov 23, 2026 if ordered today

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Estimated Ship Date: Nov 23, 2026 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: Nov 11, 2026 if ordered today

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Estimated Ship Date: Nov 11, 2026 if ordered today

AP Exhaust TruckEx Steel 3.5 Inch Muffler 3916

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

Part Number: APH-3916

Not Yet Reviewed

Estimated Ship Date: Nov 11, 2026 if ordered today

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Estimated Ship Date: Nov 11, 2026 if ordered today

AP Exhaust TruckEx Steel 3.5 Inch Muffler 3917

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

Part Number: APH-3917

Not Yet Reviewed

Estimated Ship Date: Nov 11, 2026 if ordered today

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Estimated Ship Date: Nov 11, 2026 if ordered today