(64211391387) - Hose-Heater Hose Inlet, from Back of Head- 525i (91-95) (1 available)

BMW part number 64211391387 is a molded HVAC heater hose commonly known as the heater hose intake from the back of the cylinder head to the water valve. This hose channels hot coolant leaving the engine block's cylinder head directly into the input side of the heater control valve assembly, which dictates interior cabin temperatures. Tucked away at the absolute rear of the engine bay near the firewall, this rubber line is highly susceptible to heat hardening and eventual splitting from engine rocking and continuous cooling system pressure cycles. OE, Lemforder of Germany. Fits 525i (91-95) with M50 engine.