An Engine Cylinder Head Cap is a press-fit located on the side of the cylinder head. It seals a machined opening that provides access to coolant passages within the head. These passages circulate coolant throughout the engine to regulate engine temperature. It ensures the coolant system remains sealed, preventing leaks that could lead to overheating.Attributes:• Withstands the pressures and temperatures within the engine cooling system• Maintains optimal cooling system performance by keeping entry points for contaminants closedApplications: An Engine Cylinder Head Cap acts as a secure closure for a machined opening in the cylinder head. It prevents coolant leaks and the ingress of contaminants into the coolant passages.