Please see the attached figure for the MB's rather complicated official term for that part.

It looks like even MB mechanics would have to rebuild the part (priced by the meter), so probably some hose and a clamp are the way to go. The hose listed has a price of $16.50 at your dealer, but I honestly cannot tell if that is the price with the fittings or just the price of 1 meter of the hose without any fittings. Good luck.

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1968 220D, w115, /8, OM615, Automatic transmission.
My 1987 300TD wagon was sold and my 2003 W210 E320 wagon was totaled (sheds tear).

thanx short guy...what hose would you recommend.

When mine got hard and dry and started to crack and break, on my old w116, I just found some generic plastic tubing at an auto parts outlet for a few bucks. Worked fine.

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Mac
2002 e320 4matic estate│1985 300d│1980 300td
Previous: 1979 & 1982 & 1983 300sd │ 1982 240d

“Let's take a drive into the middle of nowhere with a packet of Marlboro lights and talk about our lives.” ― Joseph Heller, Catch-22

what does this plastic hose actually do...still a rookie.

It signals to the ALDA on the injection pump to increase the fuel volume as the intake manifold pressure increases due to the turbo pumping air into it...more air without more fuel does nothing, but more air with more fuel=more power.

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1983 W123 300TD US spec Turbo engine, with Euro bumpers and manual climate control, and manual transmission.

ahh...so that why i have no power when i step on the pedal without it.