Cometic 15-19 Ford 2.7L Ecoboost Twin Turbo .036 inch MLS Head Gasket - LeftCOMETIC MLX (Multi Layer Stopper) gaskets utilize an integrated stopper layer for combustion chamber sealing and improved clamp load around the cylinder without increasing bore distortion. MLX technology can be found in some head gaskets and are made from the same materials as our MLS Head Gaskets. No sealants or re torque required. The embossed outer layers of the gaskets meet the demands of a variety of harsh sealing environments, load conditions,