Not all prechambers are the same!   Be sure to verify my photos with yours BEFORE buying to ensure an exact match (do not assume anything).

Good, cleaned, used round tip om617 prechamber with markings 617/03 on the upper face of the prechamber.  Please compare this prechamber with the one in your existing motor.  This prechamber was pulled from a TURBODIESEL om617 engine and non-turbo prechambers are different!   This is different than other prechambers that have a pointed (sharp) tip and some om617 non-turbo prechambers that have a marking of 616/01 (I do have those available if you need them).

Seller also offers a prechamber removal tool as well as prechamber collar nuts if you need them and can combine shipping!