The Cat 903D compact wheel loader, compared with its 903C2 predecessor, features a 25% increase in both lifting capacity and travel speed.

The 903D's powertrain uses a fuel-efficient, Tier 4 Final, Cat C2.4 engine, rated at 40 net hp; hydrostatic transmission that provides travel speeds to 12.4 mph; and planetary-reduction axles that are available with optional differential locks. The differential locks can be engaged “on-the-fly,” allowing the 903D to respond instantly to changing ground conditions.

Available with either an open or enclosed cab, the 903D operator's station features an ergonomic design with a new multi-function joystick that provides control of the standard third-function hydraulic system. The choice of standard-lift or high-lift boom arms increase the 903D's ability to work in a wide range of applications, with buckets ranging in capacity from 0.8 to 1.3 cubic yards, forks, or a selection of powered and non-powered work tools.

To facilitate routine maintenance, the 903D's fully opening rear hood allows ready access to the engine compartment, which features side-by-side coolers and transparent fuel/water separator. Options include an engine air pre-cleaner and radiator screen for use in high debris applications. New rear tie down locations under the machine allow for easier transport, and a new engine oil fill location allows for easier access.