Mufflers - 3.50 Inlet Diameter (in.) - 4.00 Outlet Diameter (in.) - In Stock Filter Options - Vendor In Stock Filter Options - Free Shipping on Orders Over $109 at Summit Racing

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: Jan 19, 2026 if ordered today

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Estimated Ship Date: Jan 19, 2026 if ordered today

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Estimated Ship Date: Jan 16, 2026

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

Part Number: WLK-22604

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Estimated Ship Date: Jan 19, 2026 if ordered today

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Estimated Ship Date: Jan 19, 2026 if ordered today

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

Part Number: VPE-17565

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Estimated Ship Date: Today

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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

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Estimated Ship Date: Jan 19, 2026 if ordered today

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Estimated Ship Date: Jan 19, 2026 if ordered today

Muffler, TruckEx, Steel, Aluminized, International, Each

Part Number: APH-3703

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Estimated Ship Date: Jan 12, 2026 if ordered today

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Estimated Ship Date: Jan 12, 2026 if ordered today