Genuine OEM Audi Coolant Hose With Coupling, part number 4M0122109BH. This hose is designed to transport coolant efficiently within the engine cooling system. It features an integrated coupling for secure connection within the cooling circuit. Weighing 0.098 kg, this hose measures approximately 0.15m in length. Choosing a genuine OEM coolant hose ensures precise fitment, optimal fluid flow, and resistance to temperature and pressure fluctuations, critical for engine longevity.