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Flowmaster 50 Series Heavy-Duty Mufflers

4.48 out of 5 stars 33 Customer Reviews

Flowmaster 50 Series heavy-duty mufflers can deliver more horsepower and increase torque and fuel mileage. Specifically designed for gas and diesel applications, the 50 Series heavy-duty mufflers can significantly improve acceleration and towing power while also increasing fuel economy.

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Flowmaster 50 Series Heavy-Duty Steel 3.5 Inch Muffler 953558

Muffler, Big Block, 50 Series, 3 1/2 in. Inlet/3 1/2 in. Outlet, Steel, Black, Each

Part Number: FLO-953558

4.44 out of 5 stars ( 9 )

Estimated Ship Date: Monday 3/30/2026 if shipped by air

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Estimated Ship Date: Monday 3/30/2026 if shipped by air

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