Genuine OEM Audi Engine Coolant Hose, part number 8K0121164E. This hose is designed to carry engine coolant between various engine components, facilitating efficient heat transfer. It is a critical component of the engine's thermal management system. Weighing approximately 0.02 kg, this hose is made from durable materials to withstand engine temperatures and pressures. Choosing a genuine OEM hose ensures precise fitment, correct routing geometry, and resistance to coolant chemicals, preventing leaks and maintaining engine integrity.