Transmission cooler located on top of the transmission. Don’t forget to order new o rings to complete your installation (part#’s 0000 1162 & 0000 1163) Qty 2 of each . A common sign that your transmission cooler has gone bad is finding purple oil in your coolant. It is recommended to flush your coolant system if you find transmission fluid in your coolant. You can find coolant flush and the correct coolant on our site.<>p>