After looking at mine transmission cooling lines, I need to replace them.
I would like to get rid of the quick connect fittings and make them with hose. Anyone know what size fittings i can use on transmission and cooler also what thread size i need for both connections.

 

When we did the auxiliary cooler install, just used a small tubing cutter on the metal lines and spliced in rubber hose, double clamped both ends.

 

when you replace the lines with the rubber ones, make a bubble flare on the end of the line, works better than double clamping

 

This fix works great. IT should be 3/8 fuel line hose. Works like a charm. No leaks on mine yet and it's been thousands of miles since the fix.

 

Yep, ours have been double clamped almost 18 mos. now......no leaks.