Diamond Power Intake & Exhaust Valves works with GEO TRACKER 1.6L SOHC 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 89-95 GEO TRACKER 1.6L 1588CC 98CID L4 SOHC 8V VIN CODE "U" Engine Valves are made with excellent quality materials (Nickel, Chrome and Tungsten)