Original BMW Charge Air Cooler Coolant Hose, Radiator to Electric Pump, for 230i, 330i, and 430i (2017–2021)

This Original BMW charge air cooler hose links the radiator to the electric coolant pump on B46 and B48 four-cylinder 230i, 330i, and 430i models from 2017–2021. It weighs 685 g (1.5 lb), entered production in March 2016, is made in Germany, and is sold as a single hose. Turbocharged engines that cool intake air with coolant run a separate loop for the charge air cooler, and an electric pump moves coolant through it.

Original BMW Parts carry a 24-month parts warranty.

BMW names this part hose, charge air cooler, and places it between the radiator and the electric coolant pump, which separates it from the main engine coolant hoses. It supersedes 17-12-8-634-286, and BMW rates the change as exchangeable retrospectively. The same hose appears across the F22 and F23 2 Series, the F30, F31, and F34 3 Series facelift cars, and the F32, F33, and F36 4 Series.

Technical Details

• Manufacturer: BMW, sold as Original BMW Parts
• Part number: 17-12-8-677-245
• BMW name: hose, charge air cooler
• Position: radiator to electric coolant pump
• Supersedes 17-12-8-634-286, exchangeable retrospectively
• Weight: 685 g (1.5 lb)
• Production start: March 2016
• Country of manufacture: Germany
• Warranty: 24-month Original BMW parts warranty

Common Questions

How do I know this hose needs replacing?
Look for cracking, leaking, swelling, or general deterioration. A hose that has gone dry, hard, or brittle is due for replacement.

Does it replace 17-12-8-634-286?
Yes. BMW superseded that number with this hose and rates it as interchangeable on earlier cars.

PMB can supply the coolant and related hoses for the same job.

Fitment & Compatibility

Compare your production year and trim against the table below. PMB Performance has spent over 20 years matching parts to vehicles and can verify this against your VIN.