Auto-Kat Com parts search aftermarket parts - Here you can find all part numbers of the aftermarket makers which fit your car http://auto-kat.com/
SKF parts Info
SKF also has a site for finding the SKF part numbers. While on the SKF site I found a nice tool, with your VIN or car data you can find all the SKF part numbers used in your car. So I searched for a 1989 E32 750 and got all the details what I need for the 4HP24 repair in case I have a leaking shaft seal: front seal auto trans oil pump seal 15803, front auto trans seal kit 15957, rear auto trans seal 15750, rear auto trans repair sleeve 99157 (that is the speedi sleeve)
http://www.skfpartsinfo.com/
Bosch car parts catalog 2015 with part numbers and specifications, for example fuel pump pressure and capacity/hour http://www.boschcataloguessa.c…alogue%2002_2015.html#1/z
Bosch vehicle parts finder https://www.boschautoparts.com/en/auto
Hella parts search - cat-hella public Hella application search - quite handy when you want to search for the Hella part for your BMW http://cat.hella.com/web/publi…W/applicationSearch.xhtml
Schaeffler Online Catalogue for LuK, INA, FAG and Ruville - http://webcat.schaeffler-after…en_GB/index.xhtml?reset=1