Thank you both.. That’s reassuring. These cars are so ubiquitous, it wasn’t until i got the manuals when i realized how many variations and revisions there were. Getting the right part numbers has a new level of importance. I just got a new oil line in the mail for my 123. It arrived in a 5” x 5” x 2” box(the 123’s are like 3” long, rigid steel) �� Yep! I ordered one for the w115. Devil’s in the details and Mercedes is hell for my ADD.