Radium Engineering Fuel Rail – Top Feed Conversion Mazda 26B Primary

This Radium Engineering primary fuel rail is designed specifically for the Mazda 26B 4-rotor engine. It is engineered to support high horsepower demands with compatibility for all fuel types, including ethanol blends such as E85.

Vehicle Compatibility:

• Mazda 26B 4-Rotor Engine (Custom Applications)

Overview:
Constructed from billet aluminum, the fuel rail features a large internal bore to support high flow rates and is anodized black for corrosion resistance and fuel compatibility. The fuel rail includes four 8AN ORB ports—ideal for custom plumbing and auxiliary accessories.

Two additional center ports provide optional mounting points for sensors or dampers, including:

• OEM fuel temperature sensor (with adapter 14-0421)

• Pressure transducer

• Radium Engineering fuel pulse dampers

Thermal spacers and washers are included to isolate the rail from engine heat, minimizing heat soak and maintaining fuel temperature stability.

The provided 14mm injector seats are machined for compatibility with or without the OEM injector diffusers and include fuel- and boost-safe FKM O-rings.

Fuel Injector Compatibility:
Compatible with OEM-equivalent or standard 14mm injectors. Below are confirmed fitments:

• Injector Dynamics ID1050-XDS-34-14-14

• Injector Dynamics ID1300-XDS-34-14-14

• Injector Dynamics ID1700-XDS-34-14-14

• Injector Dynamics ID2600-XDS-34-14-14

Note:
8AN ORB adapter fittings and fuel accessories are available separately. See the options [HERE].

Let me know if you'd like to pair this listing with a matching plumbing kit or other 26B-specific components.