The Cylinder Head Plug Cup is a sealing component used to close off holes or ports located in the cylinder head of an internal combustion engine. The plug cup is inserted into these cavities to ensure a secure seal, which helps contain internal fluids such as engine oil or coolant and preserve compression by isolating internal combustion pressures. Its shape allows for tight insertion, often using press-fit or expansion methods, to maintain its position during thermal cycling and vibration.Attributes:• Provides a tight, interference-fit seal to close unused passages in the cylinder head.• Minimizes the risk of contamination entering the engine's internal pathways.• Withstands engine vibration without loosening.Applications: The Cylinder Head Plug Cup is inserted into ports on the cylinder head to seal unused or service-access ports, supporting fluid retention and system isolation during engine operation.