Genuine OEM Hyundai Cylinder Head Gasket, part number 223112U021. This multi-layer steel gasket is a crucial sealing component positioned between the engine block and the cylinder head. Its primary function is to maintain compression within the combustion chambers and prevent the intermixing of engine oil and coolant. Choosing a genuine OEM cylinder head gasket ensures the correct material composition, thickness, and sealing properties, which are vital for withstanding extreme temperatures and pressures, preventing leaks, and maintaining optimal engine performance and longevity.