Original BMW 5/7 Series Engine Coolant Hose 740e (2017–2023)

This factory BMW Engine Coolant Hose 740e is intended for the engine cooling system on BMW 5/7 Series from 2017–2023. It routes coolant between the engine, radiator, expansion tank, or heater circuit. Applications include 530e, 530i, and 740e. BMW’s U.S. warranty coverage for Original BMW Parts is two years with unlimited mileage.

Technical Details

• Manufacturer: BMW
• Component: Engine Coolant Hose 740e
• Manufacturer part number: 17-12-9-844-478
• Production range: 2017–2023
• Vehicle applications: BMW 5/7 Series
• Primary function: routes coolant between the engine, radiator, expansion tank, or heater circuit
• Listed models: 530e, 530i, and 740e

Fitment & Compatibility

Review the table below for year-by-year model coverage, submodels, and any listed equipment notes. Match the engine, hose or connection layout, cooling-system equipment, and production date. A VIN check can resolve production splits or equipment differences. PMB Performance brings more than 20 years of European-parts experience to that review.