When you choose the 5150 AutoSport rod bearings

the TS-1 6870 is an externally wastegated

Please note that if you are not using port injection

1mm intake / 28

1 ATS Pressure Plate

S58 Fire Ring Set E64 M6 When you choose the 51505150 AutoSport Fire Ring Set for S58 Compatible with OEM Head Gaskets 5150 AutoSport Fire Rings are designed to enhance head gasket sealing in high performance BMW engines. Compatible with OEM head gaskets, these rings provide a superior seal for forced induction and high compression applications. Available in sets of six or eight, they help prevent head gasket failure under extreme conditions. Compatible with OEM head gaskets for a reliable and