Cardone remanufactured power brake boosters have 100 percent OE-quality seals, diaphragms, and check valves installed for performance and reliability. All units are thoroughly vacuum-tested to ensure reliable performance. Each master cylinder and booster assembly is covered with an exclusive rust-prohibitive finishing process to extend on-car life. For easier installation, master cylinder output rods are pre-adjusted on applications where they're included. New mounting nuts and washers ensure proper, hassle-free installation. Make braking a breeze when you install economical Cardone remanufactured power brake boosters.