Diamond Power Intake & Exhaust Valves works with Nissan Pathfinder 2.4L 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 80-85 Nissan Pick Up Z20-Z20E-Z20S 200SX 720 2.0L L4 SOHC 8V Engine Valves are made with excellent quality materials (Nickel, Chrome and Tungsten)