Diamond Power Intake & Exhaust Valves works with Pontiac Sunfire 2.2L OHV 2 Year Warranty (This product must be installed by a certified professional mechanic) Same day shipping when purchased before 3pm EST Our products are tested and meet or exceed OEM performance requirements Fits 98-02 Chevrolet Cavalier 134 2.2L '2200' OHV L4 Vortec VINS "4,5,G,H" Engine Valves are made with excellent quality materials (Nickel, Chrome and Tungsten)