




Radium Engineering Fuel Rail for Honda S2000 AP1 1999-2004
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Description
Radium Fuel Rail - Honda S2000 AP1 99-04
Application: Honda S2000 (2000-2005)
Part Type: Upgrade fuel rail
Part Number: 20-0591-02
The Radium Engineering S2000 fuel rail is a large bore upgrade rail with a 0.69" (17.5mm) internal bore. It is machined from billet aluminium, anodised and laser etched, and uses all five OEM mounting bosses for a secure installation.
The large ports are tapped for 8AN ORB fittings, and the small OEM regulator port is tapped 1/8" NPT for a fuel pressure gauge, plug or remote aftermarket regulator. The basic rail setup does not include fittings; replacement vacuum hose is included to replace the OEM hard lines.
Key Features
- Large Bore: 0.69" (17.5mm) internal bore
- OEM Mounting: Uses all five OEM mounting bosses
- 8AN ORB Ports: Large ports for flexible fuel system plumbing
- 1/8" NPT Port: For a gauge, plug or remote aftermarket regulator
- Billet Finish: Machined, anodised and laser etched
- Vacuum Hose Included: Replaces the OEM hard lines
What's Included
- Anodised billet aluminium fuel rail
- Vacuum hose
Optional Parts
- Radium Fuel Rail Plumbing Kit - Honda S2000 AP1 99-04 (20-0091-PK) – connects the OEM fuel pressure regulator to the factory lines for plug-and-play installation
Important Notes
- Fuel rail only – fittings are not included and must be chosen to suit your application
- This is an upgrade rail – OEM or OEM-equivalent injectors must be used (same height and matching upper and lower O-ring diameters and styles)
- Radium does not make injector recommendations – consult your tuner for brand and flow rate
- Allow ample space around the ports for regulators, gauges and pulse dampers
- Installation instructions are available in the Instructions tab
Vehicle Fitment
- Honda S2000 (2000-2005)
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.

