Your 1988 - 1993 Dodge 5.9L Cummins transmission was only designed to handle the torque and horsepower the stock engine delivers, and in the case of some Dodge models, even the stock torque can present a challenge. So when you start adding power modules, turbo upgrades and other bolt-ons, it’s only a matter of time before the transmission wears out and eventually fails.
BD transmissions are built specifically to handle the high torque loads of the Cummins diesel engines. The valve body is programmed for higher line pressure. Heavy-duty clutches with up to 25% more material than stock are installed. The stock thrust washers, which disintegrate and leave metal filings in your transmission, are replaced with roller Torrington bearings. New input shafts and hubs are installed to eliminate possible metal fatigue or high torque load damage from prior use. The early 47RE transmissions are upgraded with more rugged 48RE components. We recommend billet steel input and output shafts for applications with extra big tires and modified power levels.
