Original BMW X3/X4 Lower Radiator Hose

This factory BMW Lower Radiator Hose is intended for the engine cooling system on BMW X3/X4 from 2011–2018. It carries coolant through the lower connection between the radiator and engine cooling circuit. Applications include X3 and X4. This genuine BMW-branded component carries BMW’s U.S. two-year, unlimited-mileage limited parts warranty.

Technical Details

• Manufacturer: BMW
• Component: Lower Radiator Hose
• Manufacturer part number: 17-12-7-646-151
• Production range: 2011–2018
• Vehicle applications: BMW X3/X4
• Primary function: carries coolant through the lower connection between the radiator and engine cooling circuit
• Listed models: X3 and X4
• Position: Lower
• Listed submodels: xDrive35i and M40i

Fitment & Compatibility

Use the year-and-model entries below to verify the exact vehicle application. Match the engine, hose or connection layout, cooling-system equipment, and production date. PMB Performance has more than 20 years of experience matching European vehicle parts; send us your VIN if you need help confirming fitment.