From the factory, the 2003-2008 Rams featured a steering configuration that is known as "Y-Style." This geometry has the drag link coming off of the pitman arm and connecting to the passenger side knuckle on the other side. The original steering was later superseded on 2008.5-2013 Ram 2500 and 2008.5-2012 Ram 3500 to a "T-Style" that has the drag link still connecting to the pitman arm, but then connecting to the centerlink / main tie rod. Any truck that went to the dealership with a failed tie rod end would automatically be updated to the later T-Style linkage. As part of this update, Ram also included a revised pitman arm that has slightly more drop and angle built in where the drag link's tie rod end meets the pitman arm, in an effort to reduce any potential bump steer.
This pitman arm is a direct replacement intended to be used with the T-Style steering configuration.