Radium Engineering Coolant Tank Kit – 2017+ Civic Type R FK8/FL5

The Radium Engineering Coolant Expansion Tank is a high-performance, direct replacement for the factory plastic tank found on select Honda models. Designed to withstand the harsh conditions of street and track use, this 2-piece billet aluminum tank offers superior durability, thermal performance, and reliability.

Key Features:

• CNC-machined 2-piece aluminum construction

• Black anodized finish for corrosion resistance and longevity

• Direct bolt-on fit using factory threaded mounting points

• No permanent modifications required

• Compatible with OEM Honda 1.3 Bar radiator cap or Radium Type-A caps

• Equivalent internal volume to OEM tank – no coolant loss

• Internal swirl and dual-chamber design helps with system deaeration

• Proven performance in street and race vehicles worldwide

Benefits Over OEM:

• Resists failure from heat cycling and pressure buildup

• Better heat transfer than plastic tanks

• Suitable for high-performance and motorsport use

A smart upgrade for Honda owners looking for improved reliability, longevity, and thermal efficiency in their cooling system.