I have a 95 dodge 3500 and the fuel lines going into the tank started to leak. I have been looking all over and can not find the diesel fuel line insert that I need to replace. can anyone tell me where I might find these parts if possible. one other thing ...can I just replace the lines or do I have to replace the whole sending unit. Thanks for your help.

 

I believe they have o-rings in the ends that you can replace.

 

If it's the steel line on top of the canister then you'll have to replace the whole canister.