Timken NP310800 Differential Pinion Bearing - Front Inner

Timken NP310800 Differential Pinion Bearing

Timken NP310800 is a differential pinion bearing for front inner applications on select Ford and Mercury vehicles. It is built around Timken tapered roller bearing engineering to handle radial and axial loads in a compact driveline package.

Key Features

• Tapered roller bearing construction for differential pinion service
• Supports both radial and axial load demands in driveline use
• Engineered for durability in compact axle and transfer case output applications
• Direct replacement for applications calling for Timken NP310800
• Cross-reference: 566231

Vehicle Fitment

• Fits 2006-2010 Ford Explorer, front inner, Dana/Spicer Super 30 Axle
• Fits 2007-2010 Ford Explorer Sport Trac, front inner, Dana/Spicer Super 30 Axle
• Fits 2006-2010 Mercury Mountaineer, front inner, Transfer Case Output Shaft Bearing Compatible with Dana/Spicer 30 Axle
• Fits 2008 Ford Explorer, front inner, Transfer Case Output Shaft Bearing Compatible with Dana/Spicer 30 Axle
• Fits 2008 Ford Explorer Sport Trac, front inner, Transfer Case Output Shaft Bearing Compatible with Dana/Spicer 30 Axle

What It Helps Address

• Noise from a worn front inner pinion bearing
• Excessive play or roughness in the differential or output shaft area
• Vibration caused by bearing wear in the front driveline
• Loss of smooth gear support in Dana/Spicer 30-series axle applications

Installation Notes

Confirm axle and transfer case output shaft specifications before ordering. Timken recommends replacing the inner cone and outer cup together to maintain bearing reliability and service life. Verify the application against the vehicle’s front inner position and the listed notes for Ford Explorer, Ford Explorer Sport Trac, and Mercury Mountaineer fitment.

Quality Assurance

Timken is recognized globally for tapered roller bearing engineering and technical support. NP310800 is built to meet the load-carrying demands of driveline service in the listed Ford and Mercury applications.