Cat 2K-9459 Differential Pinion Depth Shim Pack is a genuine Caterpillar shim kit used to adjust the pinion depth in differential assemblies. The pack carries Caterpillar part number 2K-9459 and is described as a Shim Pack for Differential Pinion Depth (noted as 518 Differential Pinion Depth in some catalogs). It provides a set of shims to fine‑tune the pinion position relative to the ring gear, supporting precise gear engagement and longevity of Caterpillar axles and differentials during installation or service.
