FastLane (click 'Buy Parts' link at the top of this page) might have this part and certainly could get it for you. Otherwise a dealer would have it but probably have to order it for you. If it is warehoused in your country it wouldn't take more than a few days, otherwise a week or more to come from Germany. You can get the part number from EPC here and the subscription is free to USA residents.

As a temporary fix, clean the flex pipe w/o removing it, get some high-temperature silicone sealer, smear a bunch over the leak, cut a piece of Coke can, put it over the flex, put a metal hose clamp or two over that and tighten. That will get you by until you can get a new piece of flex.

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"Buster" in the '95

Our all-Diesel family
1996 E300D (W210) . .338,000 miles Wife's car
2005 E320 CDI . . 113,000 miles My car
Santa Rosa population 176,762 (2022)
Total. . . . . . . . . . . . 627,762
"Oh lord won't you buy me a Mercedes Benz."
-- Janis Joplin, October 1, 1970