Genuine OEM Audi Engine Coolant Hose, part number 4G0121055BL. This hose plays a vital role in the engine cooling system, facilitating the flow of coolant to maintain optimal engine temperatures. The diagram identifies it as item 23, connecting to a pipe assembly in the upper engine area. Manufactured from durable, high-temperature resistant rubber, it ensures a reliable and leak-proof connection. Using genuine OEM hoses guarantees precise fitment, correct routing, and long-term resistance to the demanding conditions of the engine bay.

Catalogue entry: HOSE.