Genuine OEM Audi Engine Coolant Hose, part number 4K0145921AH. This hose is a critical component of the engine cooling system, responsible for circulating coolant to regulate engine temperature. It connects various components within the cooling system, such as the radiator and engine block. Made from durable, heat-resistant rubber, this hose weighs 0.056 kg. Genuine OEM hoses are engineered for precise fitment and resistance to extreme temperatures and pressures, ensuring leak-free operation and the long-term integrity of the cooling system.