Recent updates from DGI’s global procurement and supply network.

Component ID Guide – Upgrading Caterpillar 994 Loader Final Drives


This ongoing component guide series outlines how to quickly and accurately identify or upgrade major OEM components.

Considering Caterpillar’s global design and engineering team capabilities, it’s unique that in over 30 years of technological evolution, a 1990 model 994A final drive still fits a 2020 model 994F/H with some relatively minor modifications.

Combined with the correct modification and installation procedures, the following modifications are required to upgrade a 994A final drive:

  • The inclusion of an additional reduction gear within the inner circle
  • Updating the inner planetary carrier from a 3 gear to 4 gear carrier
  • Updated bearings
  • Updated other smaller gears


With these and various other minor modifications, a 994A final drive is easily suitable for later model units.

DGI specialise in sourcing, and distributing Caterpillar loader components, globally. Our dedicated on-site facilities and OEM-trained specialist team give us a competitive advantage, allowing us to bypass rigorous identification and administrative processes, solving your problems faster and more economically.

View our live stock inventory or contact our friendly sales team today to discuss a wide range of available products and solutions to suit your operations.