With the KLM Single Turbo Conversion kit

With optimized spring rates

BMEVI-1055S-HS-12

1977-1982     E21     320 / 326

Designed specifically for high-performance engine builds

BMW M50 M52 S50 S52 Cut Ring Head Gasket Bore Size - Thickness:87 mm - 0.079" With the KLM Single TurboThis gasket replaces BMW part # 11121726619, 1112172622, and 11121405106 and is specifically designed for M50, M52, S50, and S52 iron block inline 6 cylinder engines found in E34 E36 chassis. 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.