CARDONE Remanufactured Fuel Injection Regulating Valves control the pressure in the high pressure oil system which operates your injectors. Vehicle conditions such as poor idle, stalling, and no-start are some of the correctible symptoms. Each individual unit is completely disassembled and undergoes quality testing to ensure proper operating parameters to meet or exceed OEM performance. Product Features:Built and 100% tested to perform like the original, with all standard wear items replacedAir decay tested to ensure on-car performanceDesigned for easy installation and setupGuaranteed fit and functionMeets or exceeds O.E.M. performance