The Timken SP550307 is a wheel bearing and hub unit assembly designed for heavy-duty axle applications. Timken engineers this unit as a preset, pre-greased, and pre-sealed assembly, eliminating the bearing adjustment and manual greasing steps required with conventional loose-bearing setups. The preset bearing load is factory-established, and the sealed design protects internal components from contamination throughout service life. This is a genuine Timken part, sold by Pro Gear and Transmission. Call us to confirm proper fit for your specific axle and vehicle configuration before ordering.
Features
Timken part number SP550307
Preset bearing load - factory-established, no field adjustment required
Pre-greased at the factory - no manual greasing during installation
Pre-sealed design - protects internal bearings from contamination
Sold as a complete hub unit bearing assembly (each)
Genuine Timken driveline and axle component
