Tru-Cool automatic transmission and engine coolers from Long Manufacturing, a division of Dana Corporation, are produced to OEM quality. This oil cooler brand can be found in many vehicles as original equipment. With an extensive line of low pressure drop models in a variety of sizes and GVW ratings, up to a max of 40,000, these fluid coolers have become widely used for upgrades to cure transmission overheating. The true LPD stacked plate design gives the best cooling possible with minimal loss of ATF pressure to the transmission. Whether you have a daily driven car, heavy off-road vehicle, or RV towing truck, Tru-Cool has the thermal cooling product needed to keep your vehicle out of the shop and on the road.