Radium Engineering Coolant Expansion Tank- Universal

Universal, pressurised coolant expansion tank designed for cooling systems where the radiator sits below the cylinder head. The two-piece 6061 aluminium body and an integrated swirl chamber purge trapped air, allowing the system to fill completely and maintain stable coolant temperatures.

Key features

• CNC-machined, anodised aluminium body for high corrosion resistance.

• 750ml capacity in a compact footprint.

• Inlet swirl chamber accelerates coolant de-aeration.

• Internal channels linking upper and lower chambers enable self-bleeding.

• ORB ports sealed with O-rings for leak-free, vibration-proof connections.

• Pre-machined for a standard 32 mm Type-A pressure cap (optional).

Installation benefits

• Complete fluid fill eliminates air pockets in the cooling circuit.

• Lowers the risk of over-heating and cavitation in high-output engines.

• Universal AN ports simplify integration in street, drift, and motorsport builds.