The Meyle Expansion Tank Cap (part number 1002380002) is a high-quality replacement cap for the expansion tank in a vehicle's cooling system. It is designed to securely seal the expansion tank, preventing any leaks or loss of coolant. This cap is made by Meyle, a reputable manufacturer known for producing durable and reliable automotive parts. It is compatible with various makes and models of vehicles and is an essential component for maintaining proper engine temperature and preventing overheating.