The machine badge on this class of excavator has carried two completely different fuel systems across its life, and the second-hand trade quotes the older one far more often than the newer — so a buyer searching by model name is steered toward a pump that will not bolt up. The plate on the pump body, not the model name, settles it. Key Features of the 094000-0484 / 8-97603414-4 HP0 Common Rail Pump High-pressure common rail pump with radial piston design (HP0 family)