[gusc]

I have a small transmission fluid leak underneath the radiator of the left side only after being driven.

I'm assuming it is at the trans cooler line coupling but haven't looked yet.

Are these couplings bad to leak and if so, do I just replace an O ring or is it not that easy?

 

[ImperialCrown]

Are these the rubber hose and 'quick-connect' style coupling? Can that line section be replaced separately?