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Z1 Motorsports High Pressure Radiator Cap for all Nissan and Infiniti models including the 300zx, 350z, G35 and 240sx.

By increasing the pressure within the coolant system, you can thereby lower the boiling of coolant itself.  In other words...Your car will run coolerLocated on the radiator, the Z1 Motorsports 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.

Sold individually. 

$24.00

What our customers say...


Great Looking Radiator Cap. If I'm not mistaken has the highest relief pressure rating out of any radiator caps I've ...

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Great quality,great looking radiator cap,easy engine dress-up ...

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Excellent construction. Definitely tighter spring tension. Recommneding upgrading/replacing all old worn out hoses to avoid any unexpected coolant leaks. ...

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Very good quality! As described. Easy to use with Howe Radiator! ...

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