Radium Engineering Aluminum Coolant Expansion Tank – FK8 Civic Type R

Say goodbye to cracked plastic and cooling system failures. The Radium Engineering Coolant Expansion Tank is a high-performance, all-aluminum replacement for the OEM Honda plastic tank — built to withstand the extreme heat and pressure of both street and track use.

🔧 Key Features:

• CNC-machined 2-piece billet aluminum construction for superior strength and durability

• Anodized finish for corrosion resistance and long-term performance

• Direct bolt-on replacement with no permanent modifications required

• OEM-equivalent internal volume – no loss of coolant capacity

• Dual-chamber design with top and bottom crossover passages for improved flow

• Internal swirl feature helps deaerate coolant, enhancing system stability

⚙️ Performance Benefits:

• Withstands intense heat cycling and pressure where plastic tanks fail

• Ideal for both street cars and full race applications

• Compatible with OEM 1.3 Bar pressure cap or Radium Type-A cap (sold separately)

• Improves thermal conductivity and coolant heat transfer

📦 What’s Included:

• (1) 2-Piece Billet Aluminum Expansion Tank

• (1) Aluminum Mounting Bracket

• (2) Aluminum Adapter Fittings

• (1) 5/16" Heater Hose

• (1) 7/32" Overflow Hose

• Stainless Steel Hardware

Fits:

• 10th Gen Honda Civic Type R (FK8)

If you’re looking for a long-lasting, high-performance upgrade that keeps your cooling system stable and looking sharp, Radium’s expansion tank is a proven solution trusted worldwide.