Genuine OEM Volkswagen Spring Band Clamp, part number WHT010540. This clamp uses spring tension to maintain a secure grip on hoses, specifically used to secure hoses to the coolant pump. It is located at position 18 in the engine cooling system diagram. The clamp is constructed from spring steel to provide consistent and reliable clamping force. Genuine OEM spring band clamps are critical for preventing leaks and ensuring the proper function of the cooling system.