Radium 20-0230-02 K-Series Fuel Rail for Honda Civic Acura RSX Integra K20/K24

Vehicle Fitment

• All Honda K-series port-injected engine applications (K20 / K24)
• 2002-2006 Acura RSX (K20A2, K20Z1)
• 2006-2011 Honda Civic Si (K20Z3)
• 2002-2005 Honda Civic Si EP3 (K20A2)
• 2003-2007 Honda Accord (K24A)
• 2004-2008 Acura TSX (K24A2)
• K-series engine swap applications

Fitment Notes

• Port-injected K-series only -- not compatible with K20C1 (direct injection)
• Fits all OEM K-series intake manifolds (RBC, RBB, RRC, PRB, etc.)
• Aftermarket manifold users -- verify compatibility with manifold manufacturer
• 8AN ORB fittings not included
• Stock feed line requires plumbing kit Radium 20-0230-PK (sold separately)
• OEM pulse damper reusable with Radium adapter 14-0278 (sold separately)

Features

• 0.69 in. internal bore
• CNC machined 6063 extruded aluminum
• Black anodized and laser etched finish
• 14mm ID injector bores -- OEM and OEM-equivalent injectors compatible
• Three 8AN ORB (3/4-16 female) ports
• E85 and alcohol fuel compatible
• Phenolic washers included -- prevents heat soak
• Fuel pulse damper provisions

Specifications

• Internal Bore: 0.69 in.
• Injector Bore: 14mm ID
• Port Threads: 8AN ORB (3/4-16 female) -- 3 ports
• Material: 6063 extruded aluminum
• Finish: Black anodized, laser etched
• Fuel Compatibility: Gasoline, E85, alcohol blends

Included Components

• 1x Black anodized aluminum fuel rail
• Stainless steel mounting hardware
• Phenolic thermal insulating washers

Product Description

The Radium 20-0230-02 is a billet aluminum fuel rail upgrade for Honda K-series port-injected engines. CNC machined from 6063 aluminum with a large 0.69-inch internal bore, it handles the fueling demands of high-power K20 and K24 builds while accepting OEM injectors and clips. All three ports are machined for 8AN ORB fittings, supporting flexible plumbing configurations for regulators, gauges, and pulse dampers. Phenolic thermal washers isolate the rail from intake manifold heat.

This listing is for the fuel rail only -- the companion plumbing kit (Radium 20-0230-PK) is needed for stock feed line connection, and 8AN ORB fittings must be sourced separately. Not compatible with the direct-injected K20C1. Compatible with gasoline, E85, and alcohol fuel blends.