Description: Hydroboost. Vendor:bendix. 11" Brakes. Meets the brake performance requirements of SAE J1153 and J1154 testing, providing reliability and quality Pressure tested to ensure safe and confident braking Cast iron and aluminum specifications; no extra stress on the brake boosting mounting Geometrical tolerance ensures that the body and plastic reservoir match for a proper fit Piston assembly and return spring help to prevent brake drag, which can cause premature brake pad wear