Another Tranny line Question

I have a leak on the return line connector right at the tranny. It is a steady drip, wether or not the Jeep is being run. Can I just replace the plastic part, or is it just available in an assembly.

Best possible solution would be to replace the entire line with rubber, but I don't see where/how to attach on the tranny.

you can get the o-ring repair kits from the dealer, the metal line is separate and snaps into the trans into the o-rings