Flowmaster FlowFX Cat-Back, Dual-Side Exit Stainless Steel Exhaust System for 2017-2022 Ford Super Duty F-250/F-350 With Either 6.2L or 7.3L Gas V8 (718100) : Flowmaster’s newest FlowFX cat-back exhaust system is for 2017-2022 Ford F-250 and F-350 Super Duty trucks equipped with either the 6.2L or 7.3L gasoline engines. This exhaust system is manufactured using durable 409 stainless steel throughout and features 3.5-inch to dual 3.0-inch mandrel-bent pipes for better exhaust gas flow, and a Flow

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