FAG 559431C Wheel Bearing - Rear

FAG 559431C Rear Wheel Bearing

The FAG 559431C is a rear wheel bearing assembly built for applications that need a compact, sealed unit with preset bearing clearance and lifetime lubrication. It is a direct-fit option for select Ford, Mercury, and Lincoln rear wheel bearing applications, including Ford Explorer, Ford Explorer Sport Trac, Mercury Mountaineer, and Lincoln Aviator models.

• Rear wheel bearing for select Ford, Mercury, and Lincoln vehicles
• Compact first-generation bearing unit with preset clearance
• Sealed and lubricated for life; no routine maintenance required
• Angular contact ball bearing design for front and rear wheel applications
• Inside diameter: 47 mm (1.85 in)
• Outside diameter: 85 mm (3.346 in)
• Height: 45 mm (1.772 in)
• Cross-reference part numbers: National 516008 and SKF GRW259

Detailed Fitment and Design

FAG 559431C is engineered as a first-generation wheel bearing unit with integrated sealing and lubrication to reduce service needs and maintain consistent operation. The bearing’s compact construction and angular contact ball design support demanding driveline conditions while matching the dimensional requirements listed for the application. This part number 559431C is used on rear wheel positions for 2002-2010 Ford Explorer, 2007-2010 Ford Explorer Sport Trac, 2002-2010 Mercury Mountaineer, and 2003-2005 Lincoln Aviator.

What This Bearing Helps Address

• Rear wheel noise caused by worn bearing surfaces
• Excessive wheel play from bearing wear or clearance loss
• Rough rotation or vibration from a failing hub bearing assembly
• Lubrication-related wear in sealed wheel bearing applications
• Service issues on rear wheel bearing replacements for Ford Explorer and Mercury Mountaineer models

Installation Notes and Tips

Verify the rear position, dimensions, and vehicle application before installation. Confirm the 47 mm inside diameter, 85 mm outside diameter, and 45 mm height against the original part or service information. For 2002-2010 Ford Explorer rear wheel bearing service, 2007-2010 Ford Explorer Sport Trac rear wheel bearing replacement, and 2002-2010 Mercury Mountaineer rear wheel bearing applications, match the bearing to the axle and hub configuration specified by the vehicle.

Quality Assurance

FAG is part of Schaeffler, a recognized supplier of wheel bearing technology. The 559431C is built as a sealed, lifetime-lubricated bearing unit with preset clearance for consistent fit and operation in the listed rear applications.