Koyo Radiator Cap SK-C13 for Mitsubishi Lancer Evolution 1, 2, 3, 4, 5, 6, 7, 8, 9 and 10.
Extract every ounce of cooling efficiency from Koyorad All Aluminum Performance Radiators with a genuine Koyorad Hyper Cap! This Koyorad Hyper Cap withstands an increased valve pressure rating of 1.3kgf/cm2 (1.3 bar) (18.9 psi) (130 kPa) which increases the boiling point of water and relieves high performance engines of excessive heat.