Skip to product information
  • Radium Engineering [title]
1 of 1

Radium Engineering

Radium Engineering 2017+ Honda Civic Type-R Coolant Tank Kit


Regular price $308.37 USD
Regular price $309.95 USD Sale price $308.37 USD
Sale Sold out
Shipping calculated at checkout.
The plastic coolant tank located under the hood of the FK8 Civic Type-R now has an upgrade. The OEM tanks have a reputation of failing, and Radium now offers a bolt-in CNC machined aluminum replacement. This kit is designed to directly replace the OEM tank without the need to make any permanent modifications to the vehicle. The FK8-specific mounting bracket attaches to existing OEM threaded holes and the Radium fittings interface with the factory coolant lines and the coolant tank functions in the same manner as the OEM system.

The Radium Engineering coolant expansion tank is CNC machined from aluminum and consists of two halves that are bolted together. The parts are anodized for long life and an attractive finish. The volume of the Radium coolant tank is equivalent to the stock tank, so there is no loss in coolant.

The internal design features two chambers that have cross-over passages at the top and bottom. The Radium Engineering coolant header tank also has an internal swirl feature, which is to help aid in deaerating the system. The 1.3 Bar OEM Honda pressure cap can be re-used, or a Radium Engineering pressure cap can be purchased.

Vehicle Applications:
  • Honda Civic Type R [FK8] (2017, 2018, 2019)


Designed to completely replace the OEM tank
Uses OE lines and has OE tank capacity
CNC Billet Aluminum for nice appearance
OEM Radiator cap works
Internal swirl feature to help aid in deaerating the system

Extended Information

Type: Coolant Tank Replacement
Material: Billet Aluminum
Finish: Anodized Black
Engine: K20C1
Chassis: FK8
Included Parts: Billet Aluminum Coolant Tank, Aluminum Mounting Bracket, Aluminum Adapter Fittings, Heater Hose, 5/16", Overflow Hose, 7/32", and Stainless Steel Hardware