


Radium Engineering Fuel Rail for Honda B-Series
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Description
Radium Fuel Rail - Honda B-Series
Application: Honda DOHC B-Series engines
Part Type: Billet aluminium upgrade fuel rail
Part Number: 20-0370-02
The Radium Fuel Rail for DOHC Honda B-Series engines is a high-flow replacement for the factory rail, with a large internal bore to support high power requirements. It is CNC-machined from 6061 aluminium, anodised and laser etched.
The 11mm ID injector bores accept factory injectors or equivalent aftermarket injectors, and the rail is ported for 8AN ORB and 1/8" NPT fittings. This is the rail only – fittings are sold separately, or add Radium's B/D/F/H-Series plumbing kit for a plug-and-play installation with the factory or an aftermarket regulator.
Key Features
- Large Internal Bore: Supports high power requirements
- Billet Construction: CNC-machined 6061 aluminium
- Finish: Anodised and laser etched
- 11mm Injector Bores: Accept factory or OEM-equivalent injectors
- Ports: 8AN ORB and 1/8" NPT
- Upgrade Rail: Not a top-feed conversion
What's Included
- Anodised aluminium fuel rail
- Stainless steel hardware
Optional Parts
- Radium Fuel Rail Plumbing Kit, Honda B / D / F / H-Series (20-1270-PK) – Fittings and FPR adapter to plumb the rail with the factory or an aftermarket regulator
Important Notes
- Fittings and adapters are not included with 20-0370-02
- OEM or OEM-equivalent injectors must be used (same height and upper/lower O-ring diameters and styles); Radium does not make injector recommendations
- Not for top-feed conversion of side-feed or air-assist vehicles
- Allow clearance around the ports for regulators, gauges and pulse dampers
- Installation instructions are available in the Instructions tab
Vehicle Fitment
- Honda DOHC B-Series engines – fits all B-Series intake manifolds, including B20B, B20B1, B20B2, B20B3 and B20B4
- Not compatible with B20A, B20Z or B21A
If you're unsure whether this will fit your vehicle, contact our team of experts via email at hello@iilumolab.com and send through a few photos of the car for us to verify fitment.
Installation
We always recommend professional fitment for guaranteed satisfaction. If you're wanting a hassle-free installation, feel free to contact our friendly team as we offer installation services in-store at our Melbourne workshop. For more details, contact us here.
Note
Upon receiving the item, please ensure that the part is indeed the correct item you have ordered. This can be achieved by checking labels on the packaging. Please also ensure a proper test fit of the item is conducted prior to paint and/or installation. Returns/Warranty claims will be voided if the item has been tampered with, or is no longer in resalable/new condition.

