Transmission Oil Leak at Radiator

[mavmannate]

Hello

I have a transmission oil leak where the line connects to the radiator. I'm not sure yet if it's the upper or lower.

I'm looking at rockauto and see the below pictures on parts. One is the radiator and one is the part thats on the radiator for the quick connect lines. Does anyone know if the bolt/o-ring picture i have below, is this stock on all of our radiators?

Thanks.