Geeetings!

I'm doing a timing chain replacmeent on my 2012 R60 with N16 Enigine. I thought it would be a good idea to replace the Crankshaft Central Bolt which i beleive the stock bolt is an M14 x1.5 x 74.

Anyway I ordered a new bolt from ECS tuning and the new bolt (silver colored bolt in attached photo) seems about 1cm shorter and does not have a captive washer near the head like the OEM part(dark colored bolt in photo).

I'm not sure if i should use this new bolt or not, Anyone else encountered this?

Do i really need to use a new bolt or can I just re-use the OEM bolt that I orignally took out if i Torque it to specs?

 

The thickness of the washer makes both of them go same depth. You should be fine using the one you bought.
Remember the torquing is in two passes. 50Nm then 180 degree.

 

O.k. So then if I understand correctly, I should install the new bolt WITHOUT a washer. Is that correct?

 

That is correct.