Increasing the pressure inside the radiator to raise the boiling point (by increasing the valve opening pressure of the radiator cap) will control air bubbles. This improves the cooling effect and optimizes the radiator's cooling function.
*Relief pressure 127kPa(1.3kgf/cm²)
**Fits: 13-20 FRS BRZ GT86 ZN6 ZC6 / 22+ GR86 BRZ ZC8 ZN8