Cardone 22-390 Remanufactured Domestic Power Rack and Pinion Unit 100% computerized hydraulic testing is implemented for proper flow, leakage and performance to ensure perfect fit and function Rack & Pinion units feature all new seals and O-rings In cases where sleeves are installed, CARDONE utilizes a special quad-bond process to ensure sleeves will never shift Every unit 100% tested for quality and reliability