Bolt-in fuel system upgrade for 2001–2006 BMW E46 M3. Replaces the OEM fuel filter with a high-flow Radium Engineering fuel filter and the factory regulator with a Radium Multi-Port FPR.
Features tool-less pressure adjustment with 1psi per detent increments, a 360-degree swiveling vacuum reference port with double O-ring seals, and four interchangeable vacuum port fittings. Compatible with all gasoline types and alcohol blends including E85. Kit includes multi-port regulator, high-flow fuel filter, fuel pressure gauge, and installation fittings.
