Radium Engineering Radiator Caps exhaust Mirror polished finish

Mirror polished finish

Operation is quiet and the progressive locking allows for smooth predictable locking

Works with OEM location and sized battery

PHR - Powerhouse Racing Hub Centric Alignment Ring for Weld Racing RTS Wheels on Toyota Supra

and an O-ring sealed dipstick

Radium Engineering Radiator Caps exhaust Mirror polished finishThe radiator cap is an essential part of an upgraded cooling system. Radium caps are engineered to safely improve cooling efficiency by managing the boiling temperature. A higher radiator pressure effectively raises the coolant boiling point, providing an extra safety margin and preventing air pocket cavitation at the water pump. NOTE: Traditionally, "radiator" caps are mounted to the radiator but can also be found on coolant expansion tanks (below).