Automatic Transmission | 2025-2026 Ram 6.7 Cummins

The 6th Gen Ram 2500/3500 with the 6.7L Cummins Turbo Diesel demand an automatic transmission that can handle massive torque, heavy towing, and long-duty cycles. Whether you’re replacing a worn factory unit or upgrading for higher horsepower and improved durability, a properly built automatic transmission for Ram HD diesel trucks is critical for reliable performance on the street, at the jobsite, and on the trail.

Diesel Power Products feature heavy-duty automatic transmissions and transmission upgrades engineered to meet the demands of 6th-generation Cummins-powered Ram HD trucks, including complete replacement transmissions, performance-built units, and critical internal components designed to increase torque capacity, improve clutch holding power, and enhance shift quality. These upgrades help reduce heat, minimize slippage, and extend transmission life under extreme loads.

Perfect for stock daily drivers, heavy tow rigs, and high-horsepower builds, these Ram 2500 and Ram 3500 automatic transmission solutions are designed to provide stronger shifts, better power transfer, and long-term reliability. If your goals include safer towing, improved drivability, and confidence under full throttle, upgrading your automatic transmission for your Ram Cummins is one of the smartest investments you can make.

We offer everything from complete transmission packages to support over 1000 horsepower, to heavy duty billet torque converters, upgraded valve bodies, or even deep sump transmission pans to keep everything running cool. As always, if you are uncertain as to what products are best for you, do not hesitate to give us a call and we would be more than happy to help.