Mazda 1.6L B6 Fuel Rail

Click here to download installation instructions (PDF)

This 0.69" big bore fuel rail is CNC machined from billet 6061 aluminum, black anodized, and laser etched for a high-quality surface finish. It is a direct replacement for the OEM fuel rail. A plumbing kit is available that provides all the necessary parts to install and plumb the fuel rail with OEM components. 

This kit is compatible with all fuel types including popular alcohol mixtures such as E85. The OEM plastic spacers are reused to thermally insulate the fuel rail from the aluminum intake manifold. 

PORTS AND FITTINGS

The fuel rail features four threaded ports that are all tapped for 8AN ORB.

8AN ORB Adapter Fittings.
8AN ORB Direct Mount Regulators.
8AN ORB Fuel Pulse Dampers.
Fuel Pressure Gauge Adapters.

If building a custom fuel setup, appropriate fittings must be selected based on the specific application. Ample space around the fuel rail port(s) is necessary for larger accessories such as fuel pressure regulators, fuel pressure gauges, and fuel pulse dampers. To verify clearance, the dimensional drawings on the product pages can be used as a reference guide.

COMPATIBILITY
This fuel rail is compatible with the following vehicles.

1989-1993 Mazda MX-5 Miata
1993-1999 Mazda Xedos 6 
1997-2003 Mazda Familia
1997-2003 Mazda Etude
1997-2004 Kia Sephia
1997-2004 Kia Shuma
1997-2004 Kia Spectra
1989-1993 Eunos Roadster

FUEL INJECTOR COMPATIBILITY

This fuel rail is compatible with factory or OEM equivalent fuel injectors. If upgrading fuel injectors, consult your aftermarket injector supplier for details. Radium Engineering cannot specify any further injector dimensions other than stating ‘OEM equivalent’.

20-0769-02 Fuel Rail, Mazda 1.6L B6
This is the basic fuel rail and only includes the fuel rail as shown in the picture below. Factory mounting hardware is re-used (consult install instructions for more info). This is ideal for high-performance applications where the installer is going to build a custom fuel system. If using the factory regulator and fuel lines, consider purchasing the plumbing kit.

PLUMBING KIT

20-0769-PK Fuel Rail Plumbing, Mazda 1.6L B6 
This add-on permits a plug-and-play replacement for the factory fuel rail. The OEM fuel pressure regulator and fuel feed/return hoses are retained making for an easy bolt-in installation.