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I need to know if anybody can identify the source of this piece.


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After discovering metallic flakes in the filter while doing an oil change on our 2012 520D F10 N47, I have decided to rebuild the engine. The sump was full of metal scraps, including the brass pieces shown above; to provide scale, I set a pen next to one of the pieces to illustrate its size; it seems to be a bushing; and, to date, I have removed the head, the crank, the pistons, and the connecting rods without locating it. The shards of metal are the result of the common issue of a faulty large end bearing.
Leave a comment if you recognize these pieces, and I'll update this post if I'm able to track out their origin.


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