CARDONE Remanufactured Vacuum Pumps are engineered for quick installation and no comebacks. Each unit is engineered and tested to meet or exceed O.E.M performance, providing you reliable performance, every time. Original design weaknesses are corrected to make a longer lasting part you and your vehicle can rely on. Product Features:100% NEW check valves, diaphragms, O-rings and seals prevent leaks and ensure proper vacuum required to efficiently run vehicle accessories100% computer testing guarantees reliable performanceEngineered to meet or exceed O.E.M.performanceDesigned for easy installationGuaranteed fit and function