The 68RFE transmission does more than just show up in the always changing language of powertrain architecture; it makes an impression, leaving a lasting echo rather than a passing whisper in the sacred wings of diesel torque mastery. When it was first introduced by Chrysler in 2007, this gearbox was a completely new invention that was painstakingly designed to control the powerful output of the 6.7L Cummins turbodiesel engine rather than a retrofit of an older one. A gearbox that could find that elusive balance became more than just a luxury as torque numbers skyrocketed into the 800 lb-ft range and customer demands required both mechanical skill and sheer strength.
