From ********, is this the correct one?
Thanks

6050780581

Cohline
Fuel Hose/Line; Braided Hose 3.2mm ID x 1.9mm Wall; Bulk
As required, injector return lines and miscellaneous uses, please note size of existing hose should be 3.5mm inner diameter X 2mm wall thickness. Primarily used for vacuum line and fuel return lines. Sold by the meter.

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83 300SD Dark Silver Dark brown inside

Looks like the right stuff, and is 3.2mm as far as I can tell, so it should work. There is some debate as to what will last the longest, especially if you're using biodiesel. SEE:
Return lines fail in 8 months

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1983 240D Silver/Blue "Sadie", unknown miles. 100k miles on WVO single tank, converted to 2 tank about 10k miles ago, FPHE, Injector Heaters, Aux Fuel pump. Alcohol/Water injection. Frantz oil bypass filter
1992 300D 2.5 Turbo Green/Tan "Jade" 267K miles Stock.
1992 300D 2.5 tan/tan "Rocky" on 2 tank WVO. Pressure actuated Turbo "rat's nest" surgery completed. 197k miles

One member claims that 3/16" Weed Wacker fuel hose will also work. He bought it from a Gardner supply store.
Various place including Ebay sell Viton fuel return hose.
I would like to know if the Viton will last longer when using regular Diesel Fuel and if it can hold up better being pulled on and off multiple times better than the stock hose.
When you find a cheap source of the stock return hose buy extra as it cost a lot of bought locally.

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84 300D, 82 Volvo 244Gl Diesel

the local ACE has fuel line for small engines. cost less than a buck a foot, last longer, you can see fuel/bubbles, etc....

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1984 123.193 372,xxx miles, room for Seven.

1999 Dodge Durango Cummins 4BTAA 47RE 5k lb 4x4 getting 25+mpgs, room for Seven.