The Chrysler 68RFE rear-wheel drive transmission, from Jasper, can be found in 2007-present versions of RAM 2500/3500 trucks equipped with a 6.7L diesel engine. JASPER has made improvements to this unit, most significantly to the UD and OD clutch. Extra plates have been added in both clutches to increase their torque holding capacity. The clutch drum has been modified to improve oil circulation and reduce the chance of heat buildup. New pump bushings are 100-percent installed on the JASPER 68RFE. This reduces the chance of gaulding on the pump cover.