Cummins 3037597 Fan Hub Assembly

The Cummins 3037597 fan hub is a continuous-drive component designed for the cooling systems of 11-liter diesel engines including the M11, ISM, and QSM series. It features a fan center distance of 215.9 mm (8.50 in) with a 19 mm (0.75 in) offset. The hub mounts directly to the fan drive assembly and interfaces with the fan blade to regulate engine coolant temperature. Constructed from cast iron and steel components, the assembly integrates a bearing and seal package rated for heavy-duty cyclic loading. It serves as a direct replacement for Cummins OEM part number 3037597 and cross-references to Hyundai Construction Equipment 3037597, Volvo SA3037597, and Onan AR45194. Primary applications include Hyundai R450LC-7 and R500LC-7 crawler excavators, Hitachi EX220 excavators, and various heavy-duty truck, industrial, and marine installations utilizing the Cummins 11L platform.