Derale Dyno-Cool Aluminium Transmission Cooler Kit. This universal all-aluminum transmission cooler is perfect for today's smaller, highly-stressed Mini and Mid Sized Truck automatic transmissions. Featuring embossed turbulators inserted into full 1/2" tubing to agitate fluid and louvered cooling fins, it extends transmission life by helping to prevent heat-related transmission failures while improving shift performance. This kit comes with a complete transmission cooler hardware kit to easily install onto vehicles with 5/16" transmission cooler lines. Construction is Aluminum tube and aluminum fin. Inlet size is 11/32" barb. GVW is 15500lbs.Width 13", Height 7-1/2", Depth 3/4", Inlet dimension 6-1/4", Mounting 10-1/8", Hose size 11/32" Derale 12906