Cardone 20-660 Remanufactured Domestic Power Steering Pump 100% computerized hydraulic testing is performed for proper flow, leakage and performance to ensure perfect fit and function All critical components (i.e. campacs, spool valves, etc.) are triple tested to ensure product reliability All units are built with 100% new seals and o-rings Units are supplied with 100% tested and calibrated pressure relief valves Shafts are 100% processed to ensure surface finish is within O.E. tolerances