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Cusco Radiator Cap

WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov

Ships in 1-5 Business Days


Raises the boiling point for better cooling efficiency, prevents over heating.

Fortified main pressure valve spring and silicon packing are used to raise the pressure inside the radiator for a higher boiling point. The coolant will not boil easily, prevents air bubbles in the block and radiator core with improved heat transfer.

CUSCO's high pressure radiator caps works at 1.3kg/cm2 at zero atmospheric pressure. In practice though, the atmospheric pressure of the road surface (approximately 1.0kg/cm2) is added and the pressure is 2.3kg/cm2. 

Cusco Radiator Cap - Type A
Fits most Mazda's, Mitsubishi's, Nissan's and Subaru's. Will also fit Hyundai Genesis Coupe 2009

Cusco Radiator Cap - Type B
Fits most Honda's and Toyota's
Fits Scion FR-S & Subaru BRZ 2013