Genuine OEM Volkswagen Coolant Hose, part number 1K0121051AT. This hose is a critical component of the engine cooling system, designed to transport engine coolant between various components to regulate engine temperature. It is typically made from durable rubber compounds to withstand high temperatures and pressures. Choosing a genuine OEM coolant hose ensures the correct routing geometry, material composition, and resistance to thermal cycling and chemical degradation, preventing leaks and maintaining cooling system integrity.

Catalogue entry: HOSE.