The Radium Engineering 20-0850 Fuel Level Sensor Adaptor is a required accessory when installing a Radium fuel pump hanger into Subaru FA20F engine vehicles. FA20F-equipped vehicles use a returnless fuel system with a unique OEM fuel unit and a different fuel level float design compared to other Subaru platforms. This adaptor provides the correct fuel level sensor mount for the OEM sensor and includes a block-off plate to seal the unused holes on the collector box.

Without this adaptor, the OEM fuel level sensor cannot be correctly mounted when using the Radium fuel pump hanger — making this kit essential for a complete and accurate installation on FA20F vehicles.

Key Features

• FA20F specific — designed for the unique returnless fuel system and float used on FA20F vehicles
• OEM sensor compatible — provides the correct mount for the factory fuel level sensor
• Collector box block-off plate included — seals unused holes on the collector box for a clean installation
• Required for Radium fuel pump hanger installation — on all FA20F engine vehicles
• Simple installation — no cutting or permanent modification required

Kit Includes

• Fuel level sensor mount adaptor
• Collector box block-off plate

Vehicle Fitment

• 2015-2021 Subaru WRX (VA) — FA20F engine
• 2013-2018 Subaru Forester XT (SJ) — FA20F engine

Available Part Numbers

• 20-0850 — Fuel Level Sensor Adaptor, Subaru WRX VA / Forester XT SJ (FA20F)

Why Radium Engineering?

• ✔ Designed and manufactured in the USA
• ✔ Platform-specific engineering — designed for the FA20F returnless fuel system
• ✔ Ensures correct OEM sensor fitment with the Radium fuel pump hanger
• ✔ Trusted by professional motorsport teams and serious enthusiasts worldwide
• ✔ Exclusively distributed in Australia by Coore

Genuine Radium Engineering product. Stocked in Sydney for fast Australian delivery. Required when installing the Radium fuel pump hanger on FA20F engine vehicles. Radium fuel pump hanger sold separately.