Circuit Hero high pressure radiator cap uses a 1.3 kgf/cm² spring to increase your coolant/antifreeze boiling point and protect you engine.
An added bonus we've incorporated is the built-in button valve. To ensure there is no hot heat pressure built up, always press the button to make sure there is no hot vapors in your radiator. Pressing the button also allows hot vapors your to escape for quicker cooling.
*NEVER OPEN RADIATOR CAP WHEN HOT.
- High pressure spring to raising engine boiling point.
- Safety button to reduce chance of being burned.
- Release hot vapors to cool down engine faster.
Type A - Fits most Mazda, Mitsubishi, Nissan, Subaru; some Honda (EF/DA/BB/FK) and some Toyota (FRS/BRZ).
Type B - Fits most Honda (EG/EK/DC/CL/AP) and most Toyota.
Part Numbers: CH-RCA-S, CH-RCA-B, CH-RCB-S, CH-RCB-B