At Next Gen Diesel, we are proud to offer built AS68RC transmissions for the 6.7L Cummins Ram 3500/4500/5500! The AS68RC is actually an evolution of the Toyota Aisin transmissions used in the Toyota Land Cruiser from the 80's and 90's. As such, it is prone to similar issues to Toyota engineered transmissions from the common era. Through enhancements in materials used and upgrades to the units hydraulic efficiency, the unit is given great benefit in applications ranging from daily driving and towing, to drag racing and sled pulling. Once built, the AS68RC can be an especially versatile and capable transmission.