F250. F350; 6.2L; w/Hydro-Boost; Booster To Reservoir; At Reservoir. F350; 6.7L Diesel; w/Hydro-Boost; Booster To Reservoir; At Reservoir. F350; 7.3L; w/Hydro-Boost; Booster To Reservoir; At Reservoir. F450. F550; 6.7L Diesel; Hydro-boost To Reservoir; At Reservoir. F550; 6.8L; Booster To Reservoir; At Reservoir. F550; 7.3L; Booster To Reservoir; At Reservoir. A flexible Hose, typically used on moving parts of a vehicle, which carries / delivers fluid to various components of the braking system. Hose To Reservoir. Hydroboost. Return Hose for Power Steering. and Amplifier; tube Assembly. Brake Hydraulic. Line Assembly. Pipe. Power Steering pump outlet. Reservoir.