Those aren't original lines since both are hose clamped. The original output line was crimped. I did a write up not to long ago explaining how to do this replacement without getting showered with diesel fuel. Run your tank low. Then get about 5' of fuel line. Hook it to your return line under the hood and idle the engine, pumping the return fuel into a 5 gallon fuel container. When the engine stalls, the tank is empty. Start this when you first get up in the morning and drink a cup of coffee as your engine pumps the tank out for you. Replace the line. Pour the fuel from the container back into the fuel tank. Start up, drive away.

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1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
1999 Fuso FG Expedition Camper
1993 GMC Sierra 6.5 TD 4x4
1982 Bluebird Wanderlodge CAT 3208--Sold 2/13