Rear Drum Brake Wheel Cylinder Kit Rear Wheel Cylinder for select 19891994 models Product overview This kit contains two rear drum brake wheel cylinders designed as directfit replacements for specific 1989 to 1994 vehicle models. Each cylinder converts hydraulic pressure into mechanical force to push the brake shoes against the drum, restoring proper rear braking function. Key benefits Restores braking function: Replaces worn or leaking rear wheel cylinders to reestablish reliable hydraulic pressure at the drum brakes. Direct fit for compatibility: Designed to match original equipment fit and mounting points for the listed vehicle models, simplifying installation. Reliable operation: Precisionmachined bore and seal area support consistent piston movement and help prevent leaks. Complete pair: Includes two rear wheel cylinders so both rear wheels can be serviced at the same time for balanced braking. Features and attributes Function: Rear drum brake wheel cylinder that actuates brake shoes when hydraulic pressure is applied. Quantity: Two rear wheel cylinders per kit. Compatibility: Fits the following models and years Ford Aerostar 1992 1991 1990 1989 Ford Explorer 1994 1993 1992 1991 Mazda Navajo 1994 1993 1992 1991 Fit and sizing: Engineered for direct replacement of the original rear wheel cylinders on the models listed; no modification to drums or mounting required when used for the intended applications. Construction: Metal housing and internal piston assembly designed for durability under normal operating conditions. Practical applications and use scenarios Leaking wheel cylinder replacement: Install the kit when you find brake fluid leaking at the rear drums to stop fluid loss and prevent brake drag or failure. Brake overhaul during maintenance: both rear wheel cylinders as part of a drum brake rebuild to ensure equal pressure and consistent braking on both sides. Restoring braking feel on older vehicles: Use the kit to address spongy or uneven rear braking caused by worn pistons or collapsed seals. Installation and maintenance notes Typical installation requires removal of the brake drum, disconnection of the brake line, and replacement of the cylinder. Reuse of original hardware depends on condition. After installation, bleed the brake system to remove air and restore proper hydraulic pressure. Inspect brake lines, hoses, and shoes when replacing wheel cylinders to ensure overall drum brake health. Compatibility reminder Verify the vehicle year and model match the compatibility list before to ensure correct fit and function.