How to find OEM part #

I need some main bearing bolts but I don't seem to be able to find any part numbers in the Bentley manual to use in a search box on-line. I'll probably end up calling World Impex, but is there any place to find a listing of part #'s?

I dunno. No car info posted or listed in your profile.

Sorry about the lack of info it's a 99.5 jetta 1.9 ALH engine.

http://metalmanparts.com/category.sc?categoryId=37

If he doesn't have it, he can get it.