Radium Engineering Universal Coolant Expansion Tank

Radium Engineering Universal Coolant Expansion Tank

Application: Universal
Part Type: Billet aluminium coolant expansion tank (822mL)
Part Number: 20-0270-00

An expansion tank is essential for bleeding air from rear-mounted or low-mounted (such as V-mount) radiators, and adds value in conventional radiator layouts too. The Radium Universal Coolant Tank allows the radiator to stay 100% full of coolant in all conditions and can be custom installed into virtually any cooling system.

The 822mL tank is a two-piece design CNC machined from billet 6061 aluminium, with the halves bolted together around a billet aluminium neck. Hot pressurised coolant enters the vortex chamber tangentially and spins rapidly to prevent aeration. This is not an overflow tank – it is designed to be part of a pressurised coolant system.

Key Features

• 822mL Capacity: Compact tank for custom cooling systems
• Billet Construction: Two-piece CNC machined 6061 aluminium
• Swirl Chamber: Tangential inlet spins coolant in the vortex chamber to prevent aeration
• Dual Chambers: Two internal chambers linked by crossover passages at the top and bottom
• Type-A Cap Receiver: Billet aluminium 32mm pressure cap receiver
• Sight Tube: Nickel-plated fittings and sight tube for checking coolant level

What's Included

• Billet aluminium coolant tank
• Anodised aluminium mounting bracket
• 6AN male adapter fittings (x3)
• 6AN 90 degree Push-lok hose ends (x3)
• Nickel-plated fittings and sight tube
• Billet aluminium 32mm pressure cap receiver
• Aluminium pressure bleed 1/4" barb
• Stainless steel hardware

Optional Parts

• Radium Engineering Radiator Cap Type A Black (18-0076-A11 / A13 / A15) – required pressure cap, available in 1.1, 1.3 and 1.5 Bar; a higher-pressure cap is worth considering for track use

Important Notes

• Pressure cap is not included – the receiver accepts Type-A radiator caps
• This is not an overflow tank – it must be installed as part of a pressurised coolant system
• 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.