5150 AutoSport Head Gasket & Head Stud Kit, BMW M20

  MLS Head Gasket: This Cometic MLS Head Gasket is specifically engineered to replace BMW part #11121722734, 11121722735, 11121722737, and 11121722738 for the M20B20, M20B23, M20B25, and M20B27 engines used in a variety of BMW models, including the E12, E21, E28, E30, and E34 3 Series, 5 Series, and 6 Series, among others. Multi-Layer Steel also known as "MLS" head gaskets are preferred as an aftermarket alternative for high-performance BMW engines, including supercharged and turbocharged models, as they offer better performance than factory gaskets. The M20B20 and M20B23 factory head gasket specifications are 80mm Bore with a thickness of 0.070 inches. The M20B25 and M20B27 factory head gasket specifications are 84mm Bore with a thickness of 0.070 inches. MLS Gaskets provide maximum sealing performance for high-output engines, without the need for sealants. These gaskets resist shearing forces and reduce bore distortion with their embossing design. Comprised of multiple layers of sta