Caterpillar 8S-3449 Gear

The Caterpillar 8S-3449 Gear is an authentic OEM Cat drivetrain component, cataloged as part number 8S-3449 (also listed as 8S3449) in the Cat Parts Store. This gear is positioned within Caterpillar’s drivetrain gears family and is manufactured to Caterpillar’s factory tolerances, supporting proper tooth engagement and reliable power transfer in heavy equipment transmissions. As a replacement part, it is intended for use with Cat-drive train assemblies on compatible Caterpillar machines, helping maintain drivetrain performance in demanding construction and mining environments. For a precise fit, verify the part number 8S-3449 against your machine’s service documentation and Caterpillar’s official parts catalog to confirm model and serial-range compatibility. Installation and inspection should be performed by qualified technicians, with attention to related gears and bearings to preserve alignment, minimize wear, and reduce drivetrain noise over the service life of the machine.