You need to use 1/2 by 3/8 barbed fitting with hoseclamps and buy 8 ft of 1/2 in hose, 7.3 lines are 3/8 inch and new cooler is 1/2 in. Cut your lines on 7.3 cooler down under bumper by front of motor where you can get to em. reroute new lines back in same place as old ones went.