Radium 20-0591-02 Fuel Rail Kit for 2000-2005 Honda S2000 F20C/F22C

Vehicle Fitment

• 2000-2005 Honda S2000 (AP1, AP2; F20C1 & F22C1 engines, manual transmission)

Fitment Notes

• Direct-fit replacement using all 5 OEM mounting bosses
• Compatible with F20C or F22C engines; works with OEM or equivalent injectors
• Vacuum lines included to replace OE air pump hard tubes

Features

• Large internal bore (0.69") for improved fuel delivery
• CNC-machined from aluminum, black anodized, laser-etched finish
• Tapped ports for 8AN ORB and 1/8" NPT fittings
• Compatible with fuel types including E85
• Aesthetic upgrade over stock fuel rail cover
• Clearance for aftermarket regulators, dampers, and gauges
• Replaces bulky OEM air-pump plumbing
• Ideal for stock-to-mild modifications with injector upgrades

Specifications

• Part Number: 20-0591-02
• Material: CNC-machined aluminum, black anodized
• Bore Diameter: 0.69" internal
• Ports: 8AN ORB + 1/8" NPT
• Mounting: Uses 5 factory boss locations
• Compatible Fuels: Gasoline, E85

Included Components

• 1x Fuel rail assembly
• Pre-installed vacuum hose to replace air pump hard tubes

Product Description

The Radium 20-0591-02 fuel rail is a direct replacement for the S2000's stock manifold rail, supporting both F20C1 and F22C1 2.0/2.2 L engines from 2000-2005. Featuring a large 0.69" internal bore and sturdy aluminum construction with black anodizing, this rail delivers improved fuel flow for performance applications. It retains OEM mounting bosses and injectors while upgrading existing hardware for a high-quality aftermarket upgrade.

With provisions for 8AN ORB fittings and NPT ports, the rail allows for seamless integration of aftermarket components such as regulators, pulse dampers, and pressure gauges. It ships with vacuum lines to eliminate restrictive air pump hard tubing, which improves under-hood clearance and fits injector swaps or injectors with OE fitment. Ideal for enthusiasts seeking reliable fuel delivery improvements in a bolt-on package.