






Radium Engineering Universal Coolant Tank, 1240mL – 20-2270
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Description
Radium Engineering Universal Coolant Tank, 1240mL – 20-2270
Application: Universal – pressurised coolant systems
Part Type: Coolant expansion tank, 1240mL
Part Number: 20-2270
Coolant expansion tanks are necessary for proper air bleeding in applications with a rear-mounted radiator or a low-mounted radiator such as a V-Mount, but they are also valuable in a conventional radiator setup. A traditional cooling system needs air in the top of the radiator at low temperatures to allow for heat expansion; an expansion tank lets the radiator stay 100% filled with coolant in all conditions.
The Radium Engineering Universal Coolant Tank holds 1240mL and is a multi-piece design CNC machined from billet 6061 aluminium. It has two internal chambers that are not isolated from each other, with cross-over passages at the top and bottom. A pressure cap is not included – the billet receiver accepts Type-A "radiator" caps.
Key Features
- 1240mL Capacity: Multi-piece CNC billet 6061 aluminium construction
- Type-A Cap Receiver: Accepts Type-A radiator pressure caps (sold separately)
- Twin Chambers: Two connected internal chambers with cross-over passages top and bottom
- Level Window: 118mm (4.6in) tall water level window
- Flexible Ports: 6AN ORB top inlet, two 10AN ORB bottom ports and a 1/4in barbed pressure bleed
- Universal: Can be custom installed into virtually any cooling system
What's Included
- Billet aluminium coolant tank
- Anodised aluminium mounting bracket
- Water level window, 118mm (4.6in) tall
- Type-A pressure cap receiver
- Aluminium pressure bleed, 1/4in barb
- Stainless steel hardware
Optional Parts
- Radium Engineering Radiator Cap Type A Black (18-0076-A11 / A13 / A15) – 1.1, 1.3 or 1.5 bar pressure cap – a higher pressure cap raises the coolant boiling point
Important Notes
- This is not a coolant overflow tank – it is designed to be part of the pressurised coolant system
- Pressure cap not included
- Installation instructions are available in the Instructions tab
Vehicle Fitment
- Universal – see Application
Not sure if this suits your vehicle? Email sales@coore.com.au and our team will confirm fitment.

