The Cummins Diesel torque at 1600 - 2200 RPM range challenges the transmission's clutch packs. You can improve the clutch holding power by resetting the hydraulic pressure but this can result in poor shift patterns, setting off trouble code lights and heat build up. BD eliminates clutch slippage, reduces operating temperatures and increases the transmission life by adding 25% more clutch surface than the stock design. Only the best quality clutch material is used and heavy-duty band-apply struts are installed. The front pump bushing is matched to the torque converter hub to eliminate internal leaks. Now electric solenoids are tested and valve body control functions are set to your power, gear ratio and load.

The special BD valve body is built with second gear lock-up and can be activated with a BD TorqLoc or AutoLoc. Each transmission is tested on BD's transmission dyno. These transmissions have been used in trucks that achieved the longest sled pull and the fastest diesel truck titles!

Note: Price includes a refundable core charge (see below product description for refundable core charge amounts). Core return instructions are included with product. Core must be shipped directly to BD Diesel in original container within 30 days for core refund. Core charge will be refunded by BD Diesel after core has been received.