A1 CARDONE SMOG PUMP, REMANUFACTURED -- Direct fit OE replacement; Thoroughly tested and cleaned for proper CFM during the remanufacturing process to prevent contamination and to assure outstanding performance; Uses proper size vanes and O.E. quality components to ensure 100 percent product quality and reliability; Its hub is pressed with Locktite to guarantee strong attachment; Features proper spring tension to increase longevity; Has carbon shoes that are installed to aid proper seal, promoting accurate cubic feet per hour or CFH level; Has proven accuracy through CFH and run in tests at 1,000 RPM.