Set of flanges for the upper part including the main cylinder head gasket and the O-rings, as well as other special O-rings or gaskets necessary for disassembly and assembly of the upper part. MLS cylinder head gaskets provide even distribution of torque across the gasket surface, ensuring less deformation of the cylinder and better sealing of the piston for more power. 4-stroke cylinder head gaskets are designed to operate in the most powerful 4-stroke atmospheric and turbo engines, using multilayer steel construction with outer layers that are embossed and coated with a Viton rubber coating. The EST (Extreme Sealing Technology) gasket set includes embossed stainless steel gaskets, main and rock gaskets, coated with a patented rubber material. The material of the main gasket allows heat dissipation from the combustion ring and even distribution across the gasket surface, eliminating hot spots and gasket wear.