Diamond Power Intake & Exhaust Valves works with Mitsubishi Lancer 2.0L 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 02-06 Mitsubishi Lancer 2-0L SOHC L4 16v 4G94 Engine Valves are made with excellent quality materials (Nickel, Chrome and Tungsten)