
Radium Engineering Fuel Rail Plumbing Kit for Honda S2000 AP1 1999-2004
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Description
Radium Fuel Rail Plumbing Kit - Honda S2000 AP1 99-04
Application: Honda S2000 (2000–2005) with Radium 20-0591-02 fuel rail
Part Type: Fuel rail plumbing kit
Part Number: 20-0091-PK
This Radium plumbing kit makes the Radium S2000 fuel rail (20-0591-02) a plug-and-play installation using the OEM fuel configuration. The green 6AN male fitting secures directly to the factory inverted flare line, and a 6AN PTFE hose connects it to the 8AN ORB to 6AN male fitting in the upper rear rail port to become the new feed line.
Two 8AN ORB plugs seal the front and rear rail ports, and the OEM fuel pressure regulator connects to all of the factory lines.
Key Features
- Plug-and-Play: Everything needed to plumb the Radium rail to the factory system
- Factory Line Connection: M14 inverted flare to 6AN male fitting secures to the OEM line
- PTFE Feed Hose: 6AN PTFE hose, resistant to all fuel types
- OEM Regulator Retained: Factory fuel pressure regulator connects to all factory lines
What's Included
- M14 inverted flare to 6AN male fitting
- 8AN ORB to 6AN male fitting
- 2x 8AN ORB plugs
- 6AN PTFE hose
Optional Parts
- Radium Fuel Rail - Honda S2000 AP1 99-04 (20-0591-02) – the Radium fuel rail this kit plumbs (required, sold separately)
Important Notes
- Fuel rail not included – this kit suits the Radium 20-0591-02 rail
- The 20-0591-02 is an upgrade rail – OEM or OEM-equivalent injectors must be used
- 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.

