The primary indicator of a faulty brake booster is a stiff brake pedal. If it takes more force than usual to bring the vehicle to a stop then possibly the brake booster is failing or has failed completely. Omix offers quality replacement brake boosters to help you get your Jeeps braking system operating at its full potential. This power brake booster and master cylinder kit fits 84 - 96 Cherokee XJ models wo ABS brakes. This is a factory surplus part so fit is as original. Brake booster includes check valve. Replaces OE 52008647