Original BMW Turbocharger Oil Feed Line for BMW 2, 3, 4, 5, and 7 Series, X1, X2, X3, and X4 (2016–2021)

This Original BMW turbocharger oil line is the factory feed pipe that carries pressurized engine oil to the turbocharger on B46 and B48 four-cylinder engines in the BMW 2, 3, 4, 5, and 7 Series and the X1, X2, X3, and X4. BMW calls it the oil pipe inlet, which places it on the supply side of the turbo rather than the return. A turbocharger shaft spins on a thin film of oil, and that same oil carries heat out of the center housing, so the feed line has to deliver steady flow whenever the engine is running. BMW's production data shows this version entering production in July 2018. It is sold as a single piece.

Original BMW Parts carry a 24-month parts warranty.

This number supersedes the earlier 11-42-2-658-749, and BMW marks the change as exchangeable retrospectively. In practice that means the current pipe also goes on cars built before July 2018 that came from the factory with the older line, so an early 330e or 430i owner orders this same part. Cross-reference data for this application also ties it to 11-42-2-398-509 and 11-42-7-617-534. BMW applies the pipe to the B46, the B48, and the B48X plug-in hybrid version of that engine, which is why the 330e, 530e, and 740e xDrive share it with the gasoline-only models.

Technical Details

• Manufacturer: BMW
• Part number: 11-42-8-487-371
• BMW part name: oil pipe inlet (turbocharger oil supply line)
• Replaces earlier part number 11-42-2-658-749, exchangeable retrospectively
• Production start: July 2018
• Engines: B46, B48, and B48X hybrid
• Sold individually, one piece
• Warranty: 24 months on Original BMW Parts

Common Questions

What signs point to a failing turbo oil line?
Oil leaks around the turbo or in the engine bay, a turbo that runs hot, and whining, whistling, or grinding from the turbo area can all trace back to a cracked or restricted oil line.

My car was built before July 2018. Is this the right part?
Yes, if it fits your model. BMW rates this pipe as a retrospective replacement for 11-42-2-658-749, so it serves earlier production cars as well.

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.