Genuine OEM Volkswagen Coolant Hose, part number 2Q0122109A. This hose is a critical component of the engine cooling system, responsible for channeling coolant between various parts to regulate engine temperature. Weighing 0.08 kg, it is constructed from materials designed to withstand high temperatures and pressures. Genuine OEM hoses ensure correct routing geometry, precise fitment, and resistance to thermal cycling and chemical degradation, which are essential for preventing leaks and maintaining cooling system integrity.