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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