Blitz Type 1 Radiator Cap, Fits Nissan, Infiniti and other import vehicles. Also fits the Koyo radiators we sell as well as 88 and earlier radiators on many Toyota vehicles. Rated at 1.3 Bar or 18.5 psi. By using Blitz high pressure cap, you can increase the boiling point of your coolant, which equates to better thermal transfer and stable water temp. Silicone radiator hoses also recommended.