The 68RFE is a 6-speed automatic transmission designed and built by Chrysler. It is used in various Ram trucks and Dodge vehicles. The 68RFE was introduced in 2007 as an upgrade to the 545RFE.
The 68RFE can handle up to 450 lb-ft of torque. This is an improvement over the 545RFE, which could only handle up to 350 lb-ft of torque. The 68RFE has been modified several times since its introduction, most notably in 2011 when it was upgraded to handle even more torque.