Transmission oil cooler 3/4 x 7-1/2 x 12-1/2. Medium duty. Imperial Econo-Cool transmission oil coolers are ultrasonically soldered for reliability and are 100% pressure-tested to ensure quality. Product Features:Imperial Econo-Kool tube and fin transmission coolerSize: 3/4 x 7-1/2 x 12-1/2Mid-size and full-size cars, pickupsGVWR up to 18,000 lbs.; towing up to 3,500 lbs