Radium Coolant Expansion Swirl Tank - Lotus Elise / Exige 2006-2011 (2ZZ-GE)
Radium Coolant Expansion Swirl Tank - Lotus Elise / Exige 2006-2011 (2ZZ-GE)
Radium Coolant Expansion Swirl Tank - Lotus Elise / Exige 2006-2011 (2ZZ-GE)
Application: Lotus Elise / Exige – 2ZZ-GE custom applications (engine swaps, turbo kits, low-mounted radiators)
Part Type: Billet coolant expansion swirl tank kit, firewall/remote mount
Part Number: 20-0270-02
The Radium Firewall Mount Coolant Tank Kit is a remote-mounted header tank commonly required for custom Lotus applications such as engine swaps and turbo kits, where the OEM expansion tank is no longer in an ideal location. Low-mounted radiators such as V-mounts also need a correctly positioned header tank for proper air bleeding.
The two-piece tank is CNC machined from 6061 billet aluminium and bolted together with a billet cap receiver for a standard 32mm Type-A pressure cap. Hot coolant enters the internal swirl chamber tangentially and spins at high speed, helping to de-aerate the cooling system.
Key Features
- Remote Mount: Firewall bracket for custom installations
- Swirl Deaeration: Tangential inlet vortex chamber removes entrained air
- 6061 Billet: Two-piece CNC machined tank, bolted together
- 32mm Type-A Cap: Billet cap receiver for standard pressure caps
- Bleed Nipple: Billet aluminium pressure bleed nipple
- 6AN Plumbing: 6AN male adapter fittings
What's Included
- Billet aluminium coolant tank, black anodised
- Aluminium 6AN male adapter fittings, black anodised
- Nickel-plated sight tube fittings
- Billet aluminium 32mm pressure cap receiver
- Billet aluminium pressure bleed nipple
- Laser-cut aluminium firewall mounting bracket, black powder coated
- Aluminium and stainless steel mounting hardware
Optional Parts
- Radium Engineering Radiator Cap Type A Black (18-0076-A11 / A13 / A15) – 32mm Type-A pressure cap in 1.1, 1.3 or 1.5 bar
Important Notes
- Pressure cap is not included
- The OEM Lotus cap is rated at 1.1 bar; a Radium high-pressure cap can be considered for extreme track use
- For a direct replacement in the factory position, see the OEM location kit (20-0270-01)
- Installation instructions are available in the Instructions tab
Vehicle Fitment
- Lotus Elise – 2ZZ-GE (custom / remote mount applications)
- Lotus Exige – 2ZZ-GE (custom / remote mount applications)
Not sure if this suits your vehicle? Email sales@coore.com.au and our team will confirm fitment.