Ford Focus RS / ST Coolant Tank Expansion Tank Kit by Radium Engineering Increase your Ford Focus RS / ST Coolant Tank size by 160mls and allow for a more efficient cooling system.

The Radium Engineering Coolant Tank Expansion Kit is CNC machined from aluminum and consists of two halves which are bolted together. Unlike traditional coolant systems, the Expansion Tank by Radium Engineering allows for the radiator to to be filled to 100% with coolant in all conditions.

An internal swirl feature along the coolant header tank aids in deaerating the system. This kit includes all necessary hardware for installation.

No permanent vehicle modifications are required.

Radium Engineering Ford Focus Coolant Tank Expansion Kit Features:

• All hardware included
• Billet aluminum coolant tank
• Aluminum mounting bracket
• Heater hose, 5/16" and 3/4"
• Overflow hose, 7/32"
• TYPE-A PRESSURE CAP SOLD SEPARATELY