The Radium Engineering 20-0870 Fuel Rail Kit is a billet aluminium fuel rail solution for Honda F-Series and H-Series engines. CNC machined from 6061 aluminium with a large internal bore, this rail supports all necessary engine power requirements while maintaining full compatibility with OEM and aftermarket equivalent fuel injectors.

The injector bores are 11mm ID — matching the OEM fuel rail dimensions — so factory injectors or any OEM-equivalent aftermarket injector can be used without modification. The rail is compatible with all fuel types including E85 and popular alcohol mixtures. OEM spacers are required for mounting and are not included.

This kit includes the fuel rail and mounting hardware only — ideal for custom fuel system builds. Additional fittings, hose, and fuel plumbing items will need to be sourced separately, or use the 20-0870-PK Plumbing Kit for a complete hookup solution.

Key Features

• Large internal bore — supports all engine power requirements without flow restriction
• 11mm ID injector bores — OEM equivalent, compatible with factory and aftermarket injectors
• CNC machined 6061 aluminium — lightweight, strong, and precision fit
• Anodised and laser etched — high quality surface finish with permanent part identification
• E85 and alcohol fuel safe — compatible with all fuel types including methanol, ethanol, and E85
• 3-mount design — compatible with both 2-bolt and 3-bolt intake manifolds
• OEM spacers required for mounting — retain your factory spacers during installation

Kit Includes

• Billet aluminium fuel rail
• Mounting hardware

Note: OEM mounting spacers required (not included). Fittings, hose, and additional fuel plumbing items not included. See 20-0870-PK Plumbing Kit for a complete hookup solution.

Engine Compatibility

Confirmed compatible with the following Honda engines. Many additional variants are likely compatible:

• H22A1
• H22A4
• H23A1
• F20A
• F20B
• F22A1
• F22A4
• F22A6

Available Part Numbers

• 20-0870 — Fuel Rail Kit, Honda F-Series / H-Series (this kit — rail and hardware only)
• 20-0870-PK — Fuel Rail Plumbing Kit, Honda F-Series / H-Series (fittings and hose — sold separately)

Why Radium Engineering?

• ✔ Designed and manufactured in the USA
• ✔ CNC machined 6061 billet aluminium — precision fit, fuel safe
• ✔ E85 and alcohol fuel safe throughout
• ✔ 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. OEM mounting spacers required (not included). Pair with 20-0870-PK Plumbing Kit for a complete installation.