Radium 20-0769-PK Fuel Rail Plumbing Kit for 1989-1993 Mazda MX-5 Miata NA 1.6

Vehicle Fitment

• 1989-1993 Mazda MX-5 Miata (NA, 1.6L B6 DOHC I4, RWD)
• 1989-1993 Mazda Eunos Roadster (NA, 1.6L B6 DOHC I4, RWD - JDM)

Fitment Notes

• This is a plumbing-only kit - the fuel rail (Radium 20-0769-02) must be purchased separately
• Designed to retain the OEM fuel pressure regulator and factory fuel feed/return hoses for a direct plug-and-play installation
• Compatible with OEM or OEM-equivalent injectors only; aftermarket injectors must match OEM height and O-ring dimensions
• OEM plastic spacers are reused to thermally insulate the fuel rail from the intake manifold - these are not included in this kit
• For the 1994+ Mazda MX-5 Miata (1.8L BP engine), see the appropriate Radium MX-5 fuel rail plumbing kits

Features

• Provides all necessary fittings for a complete OEM-style plug-and-play fuel rail installation
• Retains the factory fuel pressure regulator - no aftermarket FPR or custom lines required
• Retains OEM fuel feed and return hoses for a clean, bolt-in installation with zero custom fabrication
• Compatible with all fuel types including E85 and other alcohol-blend fuels
• Works with Radium's 8AN ORB port fuel rail (20-0769-02) for an integrated high-flow fuel system
• Made in the USA by Radium Engineering to motorsport-grade standards

Specifications

• Port Size: 8AN ORB compatible
• Application: Plumbing kit for Radium 20-0769-02 fuel rail
• Fuel Compatibility: Gasoline, E85, and alcohol-blend fuels
• Engine Type: Mazda 1.6L B6 DOHC I4 (port-injected, non-direct-injected)
• FPR: OEM retained (not included)

Included Components

• 1x Set of adapter fittings for OEM fuel pressure regulator and feed/return hose hookup

Product Description

The Radium Engineering 20-0769-PK is the dedicated plumbing kit for the Radium 20-0769-02 fuel rail for the Mazda 1.6L B6 engine, as found in the 1989-1993 MX-5 Miata NA. It includes all necessary fittings to connect the Radium fuel rail directly to the factory fuel system, retaining the OEM fuel pressure regulator and stock feed/return hoses for a straightforward, plug-and-play installation with no custom fabrication required.

Compatible with E85 and alcohol-blend fuels, this kit integrates seamlessly with the Radium 20-0769-02 big bore fuel rail and its four 8AN ORB ports. It is ideal for NA Miata builds that want the flow and plumbing flexibility of the Radium fuel rail while maintaining the simplicity of the factory fuel delivery setup. The fuel rail itself is sold separately.