Auxiliary Transmission Oil Cooler reduces the operating temperature and extends the life of a truck's transmission. Pressure tested at 150 PSI with ultrasonically soldered aluminum tube and fin construction for reliability, this transmission cooler is compatible with OEM cooler systems and has an 18,000 lb. GVWR capacity when installed in line with existing transmission cooler. Features 3/8" push-on hose barb connections for quick and easy installation. Core dimensions are 7-1/2" x 8-3/4" x 3/4". Includes mounting hardware, hose and clamps.