Radium Coolant Expansion Tank, Elise/Exige, Remote Mount

The Radium remote mounted coolant header tank is commonly required for custom Lotus applications such as engine swaps, turbocharger kits, etc. where the OEM expansion tank is no longer in an ideal location.
The main tank is a 2-piece design constructed of CNC 6061 billet aluminum. The two halves are bolted together along with a CNC billet aluminum cap receiver which mates to any standard 32mm "Type-A" style pressure cap. Coolant header tanks are necessary for applications that utilize a low mounted radiator, such as a V-Mount, for proper air bleeding.
The Radium Engineering tank also has an internal swirl feature. Hot pressurized coolant from the cylinder head is sent into the vortex chamber's inlet tangentially and accelerated to a high rate of rotation. This is an old hot rod trick to help aid in deaerating the system.
The Radium Coolant Expansion Swirl Tank features three ports that include 6AN male adapter fittings (not tapered pipe threads) for a positive seal. The lower ports are machined with 10AN ORB threads. The side port is machined with 6AN ORB threads.

If you have a deadline to meet, please confirm that we have stock ready for dispatch to avoid disappointment!


Product Info
Shipping & Returns

Free Shipping does not apply to some heavy items, for example: Wisefab & BC Racing are included for free shipping, NPC and some PWR are not included.

Shipping times may vary depending on your location, however the majority of packages are received within 3-5 business days of dispatch!

We dispatch 5 days a week, and aim to process all orders within 24hrs*

On weekends and public holidays, orders will be processed next business day.

*order processing may be delayed during sale events or holiday periods.

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