Description
S54 CNC Cylinder Head Porting V4 ClubSport REV2 IP66 Polycarbonate Enclosure and Strength for Performance Driving S85 V10 CP FPS B58 82.5 9 Bore Options:93 mm REV2 IP66 Polycarbonate Enclosure and Mounting Bracket reducing the risk of spun rod bearings—an all too common issue with BMW N54 engines