Billet Radiator Cap Large Style 21 psi (1.4 Bar) suit 42mm Water Neck

These Aeroflow radiator caps feature a precision-machined billet aluminium top from 6061-T6 aluminium. Designed for use on 42mm (large cap) radiators and recovery type expansion tanks. These caps are rated at 16 psi (1.1 bar)(110 kPa).