PORTS AND FITTINGS
The fuel rail ports are tapped for 6AN ORB and 8AN ORB.
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.
2021+ Toyota GR Yaris
2023+ Toyota GR Corolla
Manufactured with 0.6" large internal bores, the Radium Engineering fuel rails can support all necessary engine power requirements. The 2 end ports are 3/4"-16 threaded (8AN ORB). The upper area of the engine is very narrow so the 2 top ports are 9/16"-18 threaded (6AN ORB).
Stainless steel mounting tabs (shown) are included for superior strength.
The OEM fuel injectors are compatible with these fuel rails. The machined ports are compatible with 11mm upper injector O-rings, as shown below.
Because of the tight clearance, the injector electrical connector can be tricky for aftermarket injectors.
-Anodized surface finish for wear and corrosion resistance
-Lighweight aluminum construction
-Inner bore diameter: 0.6 inch
-Compatible with aftermarket Bosch EV14 fuel injectors
-Can be converted to a pressure regulated return system
-No special tools required for installation
-Fits under the factory engine cover
20-0766 FUEL RAIL
As shown below, 20-0766 only includes the fuel rail and all of the necessary mounting hardware. This is ideal for those wanting to make a custom fuel system.
See below for a plug and play plumbing kit that reuses all of the OEM parts.