Radium Engineering Toyota GR Corolla Coolant Tank Kit

Radium Engineering designed the Toyota GR Corolla Coolant Tank Kit as a purpose-built solution that replaces the factory coolant expansion tank with a purpose-built Radium reservoir while retaining the cooling systems fill, return, and expansion functions. The vehicle-specific layout is designed to fit the engine bay cleanly and provide a durable foundation for upgraded cooling-system plumbing.

For Toyota GR Corolla, it is intended to integrate with the vehicle-specific layout rather than serve as a universal substitute. Confirm hose-port layout and vehicle fitment, then refill and bleed the cooling system using the vehicle manufacturer’s procedure.