8N-7778: Regulator Housing Cover

The Regulator Housing Cover, also often referred to as the coolant reservoir cap, is a part of the cooling unit. It is a cap that seals the expansion tank in the cooling unit. It is used to regulate the internal pressure in the cooling circuit of an engine. It also prevents external elements from entering the tank, relieving maximum pressure, and eliminating the need to open the reservoir when the engine is cold. Thus maintaining the correct coolant level and system pressure, and thereby ensuring optimal engine performance and longevity. Attributes: • Made to be heat-resistant and durable • Withstands high pressure without deformation Applications: The Regulator Housing Cover is used to seal the expansion tank, preventing the coolant inside from spilling or evaporating, which could lead to engine overheating.