Radium Engineering Fuel Rail – Honda F-H-Series

This high-performance fuel rail from Radium Engineering is designed for Honda F- and H-series engines and supports both OEM and high-power fuel system setups. CNC machined from 6061 aluminum and finished with anodizing and laser etching, it delivers both performance and durability.

Key Features:

• Large internal bore to support high fuel flow

• Compatible with all fuel types, including E85 and methanol

• Designed for OEM or OEM-equivalent injectors (11mm ID bores)

• Clean anodized finish with laser-etched logo

• Includes mounting hardware (OEM spacers required)

• Ideal for custom applications – plumbing components sold separately

Confirmed Engine Compatibility:

• H22A1, H22A4, H23A1

• F20A, F20B

• F22A1, F22A4, F22A6

Although designed with 3 fuel rail mounts, this rail is also compatible with many 2-bolt intake manifolds.

Note:
This kit includes the fuel rail and mounting hardware only. Fuel fittings, hoses, and additional components are required to complete the installation. For an easy install with OEM lines, pair with Radium Plumbing Kit 20-0870-PK (sold separately).