Is this hose the one that goes from injector to injector? Any dealer or a Mercedes independent shop shoud have a supply of cloth covered fuel hoses. If you don't have a Mercedes dealer near you, try a VW dealer. They have diesels as well and they probably get their hoses from the same company that Mercedes gets theirs. It's worth a shot. I can understand you not wanting to put some chessy Pepboys part on a Mercedes. You want to keep it German OEM, as you should if you can.
1994 MB E320 Coupe (199,500 mi)
1992 MB 190E 2.6 (173,000 mi)
1983 Porsche 911SC (148,000 mi)
2004 Volvo V70 2.5T (198,000 mi)
President of CT/Westchester Section