Shop with Blessed Performance for the BD Power Torque Converter for your 1988-1993 Dodge 5.9L Cummins diesel. BD has redesigned the fluid coupling by reshaping the stator fins to achieve a higher ratio of rpm transfer through the convertor when in a fluid coupling. The lock up clutch material and surface area is enhanced to hold the high engine torque on performance Diesel engines. Many of the models contain a new billet front cover that eliminates clutch surface warping and mounting pad weakness.