these cerametallic versions offer greater thermal mass and improved heat capacity—ideal for high-load racing conditions where consistent engagement and fade resistance matter

higher torque

including racing scenarios

fade-resistant performance

Manufactured from premium 4340 steel forgings

Radium Engineering FPR and Fuel Filter Kit, BMW E46 M3 Filter Element:Stainless Filter these cerametallic versions offer greaterInstallation Instructions This fuel pressure regulator (FPR) and fuel filter is a bolt in kit designed specifically for the 2001 2006 BMW E46 M3 using factory fuel lines. The OEM fuel filter is replaced with a high flow Radium Engineering fuel filter. The filter is compatible with all fuel types. The OEM FPR is replaced with an RA Series FPR. The RA series regulators feature the first tool less pressure adjustment. A jam nut and set screw are no