OK well, maybe it's just the w123 300 turbo diesel's that have the same line? I've had two, one coupe, and one sedan, both turbo's, and they used the same line which I am now using on the 6.5 'burb.
As far as the MB line I have not had to purchase any for many years, so I don't have a part # handy. They sell it by the meter and if I recall it was about $12 USD per meter. My 300 CD had a leak about 150k miles ago and I bought some extra and never had to use it.
I think you could just ask...
You guys probably already know this........
I had a leaking return line on the passenger side so I figured while everything was removed I'd do all the injector lines. Went to pick up GM line and noticed it was really soft and used clamps. Knowing I had Mercedes line already from my 300cd I...