Radium Engineering’s big bore fuel rail is machined, polished, laser etched and then anodised for a stealth surface finish. It is compatible with OEM and aftermarket direct fitment fuel injectors. This listing is for the FUEL RAIL ONLY. See Radium listings for required fitting kit.

This fuel rail is capable of being adapted to just about any use, including with custom fuel pressure regulators etc. The two end ports are 8AN ORB compatible, and the centre port is 3/8″ NPT. This is perfect for custom fuel rail setups, or as a direct OE upgrade using the Radium 20-0070-PK plumbing kit.

This rail will fit the E46 M3 as well as S54-engined Z3 M and Z4 M models.