Koyorad 1.3 bar Radiator Cap

Koyo Performance 1.3 bar Radiator Cap Specification

This Koyo Performance cap is compatible with all Koyo radiators, but also most original radiators equipped with a cap.

Why use a 1.3 bar cap?A radiator cap rated at 1.3 bar will open later than an original cap, usually rated at 0.9 or 1.0 bar, thereby increasing the pressure in your cooling system. It increases the boiling point and ensures a more efficient cooling system for heavy duty use.