8. We then turned our attention back to the front of the Jeep and GenRight Off Road’s transmission cooler kit. If you want your automatic transmission to live off-road, you better keep it cool. The kit features a large heavy-duty Griffin transmission cooler, mounts that fit a YJ grille perfectly and bolt directly to the Griffin cooler and also comes with 25 feet of hose, two 90-degree -6AN to 3⁄8-inch barb fittings (Redhorse Performance PN 2090-06-2), and all the hardware you need to mount it. However, you still have to drill holes, and here we are marking where we will need to drill.