(64211384746) - Hose-Heater Hose Inlet Engine to Aux Pump (525i, 89-95) (2 available)

BMW part number 64211384746 is a molded heater hose. It serves as the engine water block inlet to the additional water pump inlet line.  This hose delivers hot engine coolant directly into the auxiliary water pump and heater valve configuration, which regulates hot water flowing into the cabin's heater core. Over time, exposure to extreme cabin-wall engine heat and constant cooling cycles causes this molded line to soften, swell, or crack near its connection points, creating tough-to-reach coolant leaks along the firewall.  OEM (Continental of Germany). Fits.....

• 525i (M20 engine) (89-90)
• 525i (M50 engine) (91-95)