Tru-Cool Low Pressure Drop Transmission Oil Cooler SR4454 This Transmission Oil Cooler is made for vehicles with 18,000 Gross Vehicle Weight and has a 13,000 British Thermal Units Rating and a 11/32 hose barb. The Oil Cooler is 7.25" x 11" x .75" and made up of 36 Plates. Advanced All-Aluminum Design Combines Maximum Cooling With Minimum Flow Resistance For Extended System Protection. Protection Against #1 Cause of Transmission Failure. Delivers up to 15 time less flow restriction; and 30% more cooling delivers maximum heat transfer. Here's how low pressure DRP technology works to protect your transmission: When ATF is cold it is viscous; thick and gummy. The unique Tru-Cool design allows the colder, thicker ATF to flow more efficiently through tow open bypass channels, positioned at the top of the cooler. As operating temperatures increase, the ATF becomes hotter and thinner. Its then directed through the core where it is cooled. Tru-Cool's highly efficient cooling technology combines improved protection against lube system failure with optimal heat transfer. The LPD Oil Cooler is approved for all transmissions including: AXOD/E, E40D/E, AOD/E, A604, A500, 4T60/E, TH700R4, TH440.T4, TH125/C, 4L80E, TH400. This cooler is in stock now! Ready to ship!!