Transmissions

The 2003-2007 5.9 Cummins transmission category is mostly about keeping the Dodge automatic alive behind torque. 48RE and related transmission parts get attention because towing, tuning, and larger tires are hard on converters, valve bodies, and clutches.

Transmission parts for 5.9 Cummins trucks include complete transmissions, torque converters, valve bodies, coolers, pans, and supporting drivetrain components. Decide early whether the truck needs a stock replacement or a build that can handle added power.