Genuine OEM Jaguar Engine Heater Return Hose, part number C2D40491. This hose is crucial for the engine's cooling system, designed to return heated coolant from the heater core back to the engine. It ensures efficient heat exchange and maintains optimal engine operating temperatures. Weighing 0.292 kg, this hose is constructed from durable, heat-resistant materials. Choosing a genuine OEM hose guarantees the correct routing geometry, precise fitment, and resistance to the high temperatures and pressures of the cooling system, preventing leaks and premature failure.