Radium Engineering O-Ring Service Kit Standard FST / FST-R (4" OD) Replacement Seals

Radium Engineering O-Ring Service Kit — Standard FST / FST-R (4" OD) — Replacement Seals

Radium Engineering produces precision fuel system components trusted by tuners and race teams worldwide. This genuine Radium O-ring service kit is an essential maintenance item for any build running a Radium Engineering standard fuel surge tank — keeping your FST sealed and leak-free through rebuilds, scheduled servicing, or any time the lid is removed.

This listing covers the replacement seal kit for Radium Engineering standard 4" OD fuel surge tanks, including both FST and FST-R variants. The kit includes components for both old and new style FST units, so it suits the full range of standard-diameter Radium surge tanks.

Kit Contents

• 16x small O-rings for M5 bolts
• 2x large O-rings for older style FST units
• 2x gaskets for newer style FST units

Key Features

• Genuine Radium Engineering replacement seals — not aftermarket substitutes
• Compatible with E85, ethanol, methanol, pump petrol, and flex fuel applications
• Suits both old and new style standard FST and FST-R units
• Manufactured in the USA to motorsport-grade tolerances
• SKU: 20-0087

Compatibility details and fitment notes are provided in the tabs above. Please confirm your specific FST variant before ordering.

Not sure if this kit suits your build? Contact our team at sales@chicaneaustralia.com.au for expert advice.