BMW has www.realoem.com to get access to all the part numbers, diagrams of parts and such for BMW cars, does Benz have a similar website where I can access and find part numbers for parts together with diagrams of where each part is located?

You could register at https://epc.startekinfo.com/epc/start.jsp. The membership is $12 a year but you could also register for free. After you have part #s you could go to parts.com to purchase them at discounted prices. If you really need help PM me the VIN and the parts you need and I will get you the part #s.