MLX Gasket (Multi-Layer-Xtreme) features an extra ôstopperö fold-over layer providing a torque limiting surface that prevents yielding of the combustion seal Proprietary high-temperature coatings along with embossments provide a micro seal for fluids against the head and block surface MLX head gaskets are essential for all Milwaukee 8 applications using a Turbo, high compression, nitrous or any power adder modifications Require no special machining and are installed like a regular MLS head gasket High-quality products for long-term reliability Fit air/oil cooled and Twin cooled heads Sold in pairs for popular bores and thicknesses Made in the USA. GASKET HEAD 4.320X.040 M8