The 68RFE transmission was released by Chrysler in 2007 as it's first automatic transmission that was specifically designed for 2500 and 3500 Dodge Ram diesel trucks. The 68RFE is equipped to handle the increased torque of diesel engines with modified internal components and a larger bell housing compared to that of it's four and five speed predecessors. The overdrive clutch pack can be a common 68RFE transmission failure point and can be combated with the completely redesigned GPZ ZPak shown below.