LPD SR4588 Transmission Oil Cooler

The Tru-Cool LPD SR4588 transmission oil cooler is engineered to provide efficient cooling for automatic transmissions, especially under heavy loads or in demanding conditions. This model features a robust design with 24 stacked plates, offering a substantial BTU rating of 14,400 and supporting vehicles up to 19,000 lbs GVWR. Its compact dimensions (5-3/4" x 11" x 1-1/2") allow for versatile mounting options. Installation of the SR4588 commonly includes bypassing the stock radiator's transmission fluid cooler. This modification helps prevent potential transmission damage caused by radiator leaks or internal failures. Users have observed significant benefits, including smoother gear shifts and a noticeable reduction in transmission fluid temperatures, with some reporting a drop of approximately 25 degrees Fahrenheit after installation and radiator bypass. The cooler utilizes 11/32” hose barb fittings for connection. While the installation is generally considered manageable, taking around an hour and a half for a careful setup, it's important to ensure all connections are securely tightened to prevent leaks, as reported by some installers. The unit's low-pressure drop design is also a key feature, ensuring efficient fluid flow without compromising transmission performance, especially in colder climates due to its passive bypass for cold weather operation.