MSW’s Take: We’ve been using this rail for several years now on our WRL endurance race car as a means to plumb in a return style setup with an adjustable fuel pressure regulator and defueling setup. It has worked extremely well and allowed for far more options than the standard “dead-head” stock rail.
The Radium Engineering fuel rail for the BMW S54 engine is machined and anodized for a compatibility with all fuel types including E85. Manufactured with a large internal bore, the fuel rail can support all necessary engine power requirements. It is compatible with OEM and aftermarket direct fitment fuel injectors. It features a large 0.65″ internal bore The fuel rail is a direct bolt-on for all BMW’s equipped with the S54 engine.
The fuel rail end ports are tapped for 8AN ORB and center port is tapped for 3/8 NPT.
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’.
This product is for the rail and mounting hardware only. You will need to route and make your own hoses.