Radium Engineering Fuel Rails

• Direct-replacement fuel rails for engines such as Nissan RB26, SR20 and VQ, Toyota 1JZ/2JZ, Honda K-series, Ford Barra and BMW six-cylinders.
• Top-feed conversion rails for Subaru EJ20/EJ25 and other side-feed engines.
• Port injection kits for direct-injection engines, such as VW/Audi EA888 and Honda Civic Type R.
• Injector seats and adapters in 22mm, 25mm and other sizes.
• Fuel rail plumbing kits are listed with each engine in the main Radium range.

Order by engine code, not just model. A Subaru EJ20 and EJ25 or a 1JZ VVTi and non-VVTi can need different rails.

Check the injector type and top O-ring size (for example 11mm or 14mm) your rail takes, and match your injectors to it.

Port injection kits need injectors, a fuel supply and an ECU that can run them, so plan the tune before you buy.

Rails bolt on in place of the factory rail, but most builds also need AN fittings, hose and a return line to a fuel pressure regulator. Pressure-test the system with a gauge before starting the engine. Installation by a professional is recommended, and the car will need a tune for new injectors.

What is a top-feed conversion?
Some older engines, like the Subaru EJ20, use side-feed injectors. A top-feed conversion rail lets you run modern top-feed injectors, which come in more sizes and are easier to source.

Do I need a return-style fuel system?
Most Radium rails are built for return-style systems with a separate fuel pressure regulator. Check the listing for your engine.

Are Radium fuel rails E85 safe?
Yes. Radium rails use materials suited to petrol, E85, ethanol and methanol.

• All fuel rails at Chicane
• Radium fuel pressure regulators
• Injector Dynamics injectors
• All Radium Engineering parts
• Radium for Subaru WRX and STI
• Radium for Nissan
• Radium for Toyota Supra
• Radium for Mitsubishi Lancer Evolution
• Radium for Honda Civic Type R