Dieselr Aluminized 4" Turbo Back Exhaust Single Cab & Chassis | F250/F350 7.3L Ford Powerstroke (1999-2003)The Dieselr Aluminized 4" Turbo Back Exhaust Single Cab & Chassis (19992003 7. 3L Powerstroke) is engineered for Ford F 250 and F 350 C&C owners who need a reliable, corrosion resistant exhaust that performs under real world conditions. Built from 4 inch heavy gauge aluminized steel, this system enhances exhaust flow, lowers EGTs, and maintains steady power through long hauls and daily work. Each Dieselr system is mandrel bent for smooth, unrestricted