You didn`t state what model W123, so I looked up an 84 300D.
the part is the brake booster Line, around $25.

Click on the catalog Tab above and enter your year and model, and look under brakes, then brake booster.

1984 Mercedes-Benz 300D Sedan - Brake Hydraulics - Page 3

When you are in the PNP yards, always grab he good one`s, ya never know when ya need one.

Charlie

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there were three HP ratings on the OM616...

1) Not much power
2) Even less power
3) Not nearly enough power!! 240D w/auto

Anyone that thinks a 240D is slow drives too fast.

80 240D Naturally Exasperated, 4-Spd 388k DD 150mph spedo 3:58 Diff

We are advised to NOT judge ALL Muslims by the actions of a few lunatics, but we are encouraged to judge ALL gun owners by the actions of a few lunatics. Funny how that works