The Timken HA590178 is a hub unit bearing assembly designed for wheel-end applications on heavy-duty trucks and trailers. Timken builds this unit preset, pre-greased, and pre-sealed from the factory, eliminating the need for bearing adjustment or field lubrication at installation. The sealed design helps protect internal bearing surfaces from contamination over the service life of the assembly. Pro Gear and Transmission carries genuine Timken parts. Call us to confirm proper fit for your axle and wheel-end application before ordering.
Features
Genuine Timken hub unit bearing assembly, part number HA590178
Preset from the factory - no bearing adjustment required at installation
Pre-greased and pre-sealed - no field lubrication needed before mounting
Sealed design helps shield internal bearing surfaces from contamination
Sold individually (each) by Pro Gear and Transmission
