This transmission cooler comes with an eight - inch electric fan which is perfect for heavy duty trucks and supercharged or turbocharged applications to ensure transmission temperatures remain low and to keep your vehicle performing at its best.Extend the life of your transmission with the Mishimoto Heavy Duty Transmission Cooler Kit.It is made with 100 - percent aluminum and is tube and fin constructed.The kit includes an 8 - inch electric fan and mounting equipment for universal installation.