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The Z1 High-Pressure Radiator Cap fits various Nissan and Infiniti models, including the 300ZX, 350z, G35, 370Z, Q50, Q60, and '23+ Z.
Radiator caps have a spring-loaded valve and seal that keeps a small amount of pressure in the cooling system and acts as a relief as pressure rises above normal. By increasing the pressure within the coolant system, you raise the boiling point of the coolant. This prevents cavitation caused by localized boiling as engine temperatures rise and provides a bit more insurance against damage caused by overheating in cars used in more demanding scenarios. Located on the radiator or pressurized coolant reservoir, the Z1 High-Pressure Radiator Cap replaces the stock cap which has a factory relief pressure of 1.2 Bar (17.4 PSI) with a relief pressure of 1.37 Bar (19.9 PSI).
Produced with OEM quality, but with the performance advantages of an aftermarket radiator cap.
*** This item does not qualify for any additional discounts or promotions ***