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

If you're unsure whether this will fit your vehicle, contact our team of experts via email at hello@iilumolab.com and send through a few photos of the car for us to verify fitment.

Installation

We always recommend professional fitment for guaranteed satisfaction. If you're wanting a hassle-free installation, feel free to contact our friendly team as we offer installation services in-store at our Melbourne workshop. For more details, contact us here.

Note

Upon receiving the item, please ensure that the part is indeed the correct item you have ordered. This can be achieved by checking labels on the packaging. Please also ensure a proper test fit of the item is conducted prior to paint and/or installation. Returns/Warranty claims will be voided if the item has been tampered with, or is no longer in resalable/new condition.