Radium RB25 Top Feed Fuel Rail


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SKU: RAD 20-0277 Categories: , , Tags: , ,


This Radium Engineering fuel rail kit is a direct bolt-on with the RB25DET (non NEO) engines originally found in the R33 Nissan Skyline GTS-T. Manufactured with a large 0.69″ internal bore, the fuel rail can support all necessary engine power requirements. The Radium fuel rail converts the OEM side feed fuel injector setup to top feed allowing the use of high flow 14mm O-ring fuel injectors (not included). This kit is compatible with E85. The fuel rail has four 8AN ORB ports that can be used for fuel inlet, outlet or for plumbing option accessories. All unused ports must be plugged.

The kit includes 2 sets of phenolic spacers to suit multiple height injectors. The spacers are machined from phenolic material and offer excellent resistance to heat transfer.

  • Use the tall spacers and longer mounting bolts to accommodate this size injector: 48mm tall, 14mm top o-ring, 14mm bottom oring
  • Use the shorter spacers to accommodate 34mm tall injectors with 14mm top and bottom o-rings.

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