making them an excellent option for naturally aspirated engines

A 237hp gain over stock

2011-2018     E70/F15     X5 xDrive35i

The AISI 304 stainless steel cooper rings bite into the aluminum head

SuperTech delivers top-tier valve spring kits specifically engineered for BMW S58 engines

BMW S50B30 / S50B32 EURO Cut Ring Head Gasket by Athena-SCE Pro-Xtreme making them an excellent optionThis Athena Cut Ring Head Gasket is specifically engineered to replace BMW part numbers 11121402382 and 11121405748 for the BMW S50B30 and S50B32 European inline six engines. Factory OEM & MLS head gaskets are only engineered to handle a limited amount of cylinder pressures before they start to leak, causing a range of issues, including engine overheating, loss of power, misfires, and in severe cases, catastrophic engine failure. Athena SCE Cut Ring