If you don't have a tranny cooler, then the lines will run into the radiator. The after market one should tell you eveything that you will need, or come with all the parts to install it, if it is vehicle spacific.

 

I put a hayden transmission cooler in mine, I got it at advance auto. I had to take the front grill and the fan plastic cover off. After you attach the cooler to the radiator (mine use fancy zip ties). Then you run 3/8 hose from the cooler to the top cooler line going into the radiator. Take off the stock line and put in the ****** fitting attach the hose(this line goes to the top of the tranny cooler. Then run a hose from the bottom of the cooler to the spot where the top stock fitting went it, itstall a ****** fitting to that attach the hose and you're done. Mine had no instructions, but it came with the hose, but I had to buy the radiator line fittings, and a quart of tranny fluid. But I think it isa good idea to keep your tranny in good shape. If you need any more help with the install shoot me a message.

 

I already had one but I bought one not knowing that I had one, I got a Flexlight it came with everthing I need. I think im going to just use it as a oil cooler.