Tru-Cool Heavy Duty Automatic Transmission Oil Cooler Kit 7 1/4" x 11" x 3/4". Protection against #1 cause of transmission failure. Performance-rated for cars, vans and light trucks up to 28,000 lbs. NEW Long Tru-Cool transmission cooler, Part Number LPD4543. This cooler is rated at 20,000 GVW and measures 7 1/4"x11"x3/4". This cooler has 3/8" house barb fittings. This low pressure drop cooler is a must for Heavy duty applications, from towing to racing, but is recommended for even daily driven vehicles. Heat is what kills an automatic transmission. If you want to extend the life of your transmission and avoid or prolong a costly rebuild, this is very cheap insurance. All parts are included to mount this cooler. This cooler comes with transmission house. This cooler comes with a manufacturer's limited lifetime warranty. Brand New Factory Sealed. All Orders Received before 4.00pm Mondays to Fridays are dispatched the same day.