Genuine Mercedes-Benz OM642 Engine Breather / Oil Separator – A6420101891 – Germany

This is the real deal—a genuine Mercedes-Benz crankcase breather (oil separator) for the OM642 engine.

Part number A6420101891, made in Germany.

It’s a direct OEM replacement, so no guesswork.

The connector is black, with one wire.

Fits multiple positions: front, rear, left, right, top, bottom—engine bay or passenger compartment depending on your model.

Cross-references with a bunch of numbers: A6420100191, A6420100391, A6420100591, and more (see the full list).

If your OM642 is smoking or leaking, this part often fixes it.

New, genuine, and ready to ship.

Keep your diesel running clean.