Genuine OEM Toyota Engine Cylinder Head Gasket, part number 1111537060. This critical gasket forms a seal between the engine's cylinder head and the engine block. Its primary function is to prevent combustion gases from escaping the cylinders and to keep coolant and oil from mixing. This gasket is made from high-quality materials designed to withstand extreme temperatures and pressures within the engine. Genuine OEM parts are engineered to exact tolerances, ensuring a perfect seal, preventing internal engine leaks, and maintaining optimal engine performance and longevity.