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Genuine 64218377698 BMW HVAC Heater Hose Additional Water Pump to Engine Inlet

Manufacturer

Part Number

64 21 8 377 698
Sale Price

$56.54

1 left at this price

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Product Details

The Genuine BMW 64218377698 is an OEM HVAC heater hose designed to connect the additional (auxiliary) water pump to the engine inlet as part of the vehicle's heating and cooling circuit. This is a direct factory-replacement hose engineered to meet the original BMW specifications for fit, material, and performance.

Over time, heater hoses are subjected to sustained exposure to hot coolant, pressure cycling, and heat soak. Common failure symptoms include swelling, cracking, hardening, brittleness, or visible coolant leaks at the connection points. Replacing a worn hose promptly helps prevent coolant loss and potential overheating.

Key Features:

  • Genuine BMW OEM part — manufactured to factory specifications
  • Connects the auxiliary (additional) water pump to the engine coolant inlet
  • Reinforced rubber construction for durability under sustained heat and pressure
  • Correct pre-formed shape, diameter, and length for a direct, no-modification installation
  • Helps maintain proper coolant flow through the HVAC heating circuit

This hose is sold as a single unit. When replacing this hose, it is also recommended to inspect surrounding hoses, hose clamps, and the auxiliary water pump for signs of wear or leakage. BMW OEM Part Number: 64-21-8-377-698.

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