The Cummins diesel torque at the 1600-2200-engine 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 shifting patterns, setting of trouble code lights and heat build up.

The only transmission that can boast about being a full roller bearing design. Stock and other transmission rebuilders use thrust washers. This results in soft metal floating around your transmission and then eventually settles to the bottom of the pan. This metal plugs up oil pressure ports, excessive thrust bearing wear and short life. 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. New electronic solenoids are tested and valve body control functions are set and tested. The 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 our transmission dynamometer.

Exchange transmission kits come complete with:

A BD PressureLoc kit that boosts line pressure when the convertor is locked up.
A deep cast aluminum pan for increased oil capacity; improved cooling and better housing support.

A one year parts, labour and freight warranty through out North America. Extend you warranty to 3-years with our Extended Warranty Kit which includes a full flow oil filter.

For those of you just out to improve your 47RE or 48RE to the point that you can use more of the settings on your Smarty programmer, Edge, Bully Dog etc. consider adding a BD Torque Converter and Valve body.  For added strength go for the BD Black Flex-Plate and for extra fluid capacity add the BD transmission pan.  This set-up should handle anything you throw at it other than 4x4 launches at the drag strip and sled pulling competitions.  If you are going to compete at the drag strip or the pulling competitions consider adding billet input and output shafts or upgrading to a full built tranny.

Many other BD Transmission products are available in our online store including manual transmission clutches, auxillary transmission coolers, in-line transmission filter kits, overdrive Lock-Out for '05 Dodges and torque converter lock-up controllers for use with BD exhaust brakes.  BD Diesel Performance transmissions hold their own against other brands including Suncoast, ATS, Goerends and NADP.

BD 03-07 48RE Torque Converter $1187.50
Click Here for Product Details!Torque Convertors Dodge RAM Torque convertor technology BD's new 7X torque convertor out pulls the rest, it is the best for towing and race applications. Check out the design benefits below. 1. BD's X stator that is machined from a solid piece of aluminum. We manufacture stator designs that have Fin length, Fin angle and Fin curvature designed to meet the torque of the 5.9 Cummins, great for towing and the 1/4 mile racer , 140 to 600 rear wheel Hp . 2. A new double clutch surfaced piston was designed to replace the stock single clutch surface to meet the engines torque right up to 1400 lbs. Ft. and heavy loads. It has been tested to 850 lbs. Ft. of torque when pulling a 26,000 lb. load up a 6% grade and on race trucks with over 1400 ft. lbs of torque that attain 11 seconds in a 1/4 track 3. A new heavy billet front cover was built for the double clutch surface piston and to prevent the cover from over heating, warping and ballooning. A special clutch mating surface was designed into the cover that results in high torque holding power. This product has a $300 refundable core charge. The price below includes the refundable charge.
BD 03-07 Dodge Valve Body $450
Click Here for Product Details!Transmission Valve Bodies High horsepower engines require modifications to their power train to prevent the transmissions from failing. A stock transmission has limited clutch material and its holding ability can be improved by increasing the amount of clutch apply pressure by reworking the stock valve body. New valve designs, new springs, oil port sizes, new governor piston dimensions and adjustments have been made. Larger ports increase flow rates which cools the oil and reduces convertor oil evacuation time for quicker clutch apply time. Solenoids are pretested as is the complete valve body prior to shipping. . We also have 2nd gear lock up available so you can use 2nd gear for some serious engine retarding. A TorqLoc switch will have to be used to activate this function. If you have an extremely high horsepower engine we can preset the valve body for pressures up to 180 psi! Normal applications are usually set for 100 psi. Each valve body is tested on our Answermatic 2000 tester before shipping. Installation manuals can be emailed upon request. *NOTE: This product has a $100 refundable core charge.
BD Black FleX-Plate 94-07 Dodge 5.9L $399
Click Here for Product Details!BD Flex Plate BD's NEW Black FleX-Plate If you race your truck, or compete in pulling competitions, you're probably all too familiar with the phrase, "A drivetrain is only as strong as its weakest link." Well, with the Dodge-Cummins, one of the weakest links is the factory flexplate-but the BD FleX-Plate can change all that. The flex plate is what connects your engine to the torque converter, and the factory component is only meant to handle the output of the stock engine-not the high torque loads that can easily be produced by a modified engine. The BD Black Max FleX-Plate is guaranteed to be the industry's strongest. Advanced design allows the FleX-Plate to reliably handle over 1,500 lb-ft. of torque. Featuring twice the material of the stock flex plate, these units are precision-balanced, and are backed by the best warranty in the business. Check out these features! SFI-approved for race sanctioning bodies Twice the thickness of the stock flexplate Manufactured using a high-strength "cold formed" process 300% less radial run-out than other aftermarket flex plates Shot-peened for stress relief and higher fatigue strength 350% better fatigue strength than aluminum Unaffected by hydrogen embrittlement, which can drastically reduce strength Easy installation-simply align with starter and bolt in place Correct ring gear tooth spacing won't damage starter Available for 1994-2007 Dodge-Cummins automatic transmission applications the BD FleX-Plate is the ultimate flex plate for your racing or pulling Ram! We priced it so you can afford to change it even if your old one has no cracks on inspection. NOTE: The NEW BD FleX-Plate is designed to work with ALL Torque Convertors. If you have any questions, please call for details.
BD Deep Sump Transmission Pan Dodge $266
Click Here for Product Details! Deep Sump Cooling Pans 727/518/47RH/47RE/48RE Holds 2 quarts more than the stock pan. Deep Sump Cooling pans BD Deep Sump Transmission Oil Pans are made with heavy duty 356T6 cast aluminum. They add strength and prevent the transmission case from flexing from high torque Diesel engines which causes internal oil leaks. Features and benefits include: - Additional Oil capacity to assist in keeping the oil temperature at a proper operating level - Embedded o-ring sealing surface on the Allison and Ford numbers prevents oil leakage. - Zero-Leak Gold Port Magnetic entry plugs provide dependable no-leak protection - External cast fin tips are machine finished in the high gloss black powder coating and cool the contained oil.
BD 94-02 Dodge Torque Converter $1187.50
Click Here for Product Details!Torque Convertors Dodge RAM Torque convertor technology BD's new 7X torque convertor out pulls the rest, it is the best for towing and race applications. Check out the design benefits below. 1. BD's X stator that is machined from a solid piece of aluminum. We manufacture stator designs that have Fin length, Fin angle and Fin curvature designed to meet the torque of the 5.9 Cummins, great for towing and the 1/4 mile racer , 140 to 600 rear wheel Hp . 2. A new double clutch surfaced piston was designed to replace the stock single clutch surface to meet the engines torque right up to 1400 lbs. Ft. and heavy loads. It has been tested to 850 lbs. Ft. of torque when pulling a 26,000 lb. load up a 6% grade and on race trucks with over 1400 ft. lbs of torque that attain 11 seconds in a 1/4 track 3. A new heavy billet front cover was built for the double clutch surface piston and to prevent the cover from over heating, warping and ballooning. A special clutch mating surface was designed into the cover that results in high torque holding power. *NOTE: This product has a $300 refundable core charge.
BD 94-02 Dodge Valve Body $450
Click Here for Product Details!Transmission Valve Bodies High horsepower engines require modifications to their power train to prevent the transmissions from failing. A stock transmission has limited clutch material and its holding ability can be improved by increasing the amount of clutch apply pressure by reworking the stock valve body. New valve designs, new springs, oil port sizes, new governor piston dimensions and adjustments have been made. Larger ports increase flow rates which cools the oil and reduces convertor oil evacuation time for quicker clutch apply time. Solenoids are pretested as is the complete valve body prior to shipping. . We also have 2nd gear lock up available so you can use 2nd gear for some serious engine retarding. A TorqLoc switch will have to be used to activate this function. If you have an extremely high horsepower engine we can preset the valve body for pressures up to 180 psi! Normal applications are usually set for 100 psi. Each valve body is tested on our Answermatic 2000 tester before shipping. Installation manuals available upon request. *NOTE: This product has a $100 refundable core charge.
BD Auxillary Transmission Coolers $199
Click Here for Product Details!Transmission Coolers 94-07 Dodge Cummins Protect your transmission with this 12V fan-equipped Heavy Duty cooler that is mounted away from other heat sources and can be thermostatically or manually. This is essential while increasing performance when accelerating or retarding horsepower. Order the fan alone or with the install options below.
BD In-line Transmission Filter kit 03-07 Dodge 48RE $237.50
Click Here for Product Details!Transmission In-Line Filter Kits - BD's Transmission filter kit protects your Ford, Dodge and GM heavy duty Automatic Transmissions against contamination in the transmission fluid - Eliminates contamination from prior transmission failure or excessive wear and secondary damage to other parts once a part failure has occurred - Extends Transmission life by minimizing wear by preventing sticking and scoring of sensitive shift control valves. - Added oil capacity adds cooling capacity - An off the shelf oil filter has a bypass valve and prevents formation of sludge that blocks passages - Designed for easy installation the kits come complete with all required hardware with large hoses and fittings that result in high GPM levels even under extreme use.