Radium Radiator Cap Mazda MX5

Radium Radiator Cap for Mazda MX-5 An upgraded radiator cap is essential for any modified or tracked MX5 and can help improve the cooling efficiency of the car. Radium provide a variety of high-quality radiator caps with higher than OEM pressure ratings, ideal for turbocharged and supercharged MX-5s. Pressure ratings and colours available: 1.1Bar (16.0 PSI) (Polished) 1.3Bar (18.9 PSI) (Black) 1.5Bar (21.8 PSI) (Black) Radium rad caps are manufactured out of stamped stainless steel and feature silicone seals, as opposed to the OEM caps natural rubber, giving a higher heat tolerance and longer life span.