Timken SP550203 Wheel Bearing and Hub Assembly - Rear

Timken Rear Hub Assembly for Expedition and Navigator

The Timken SP550203 wheel bearing and hub assembly is built for rear applications on select Ford Expedition and Lincoln Navigator models. It combines OE-developed testing, precision bearing construction, and integrated ABS wheel speed sensing to support stable braking, reduced vibration, and consistent wheel-end performance.

Key Features

• Rear wheel bearing and hub assembly for driven applications
• 33-spline design with a 4-bolt flange pattern
• 6 wheel studs and a 5.306-inch bolt circle diameter
• Low runout construction to reduce noise and vibration
• Premium seals with reinforced and contamination-resistant features
• Precision bearing profiles and enhanced surface finishes for load capacity and bearing life
• ABS sensor tested for wheel speed monitoring in Anti-lock Braking Systems

Detailed Description

Timken SP550203 is a rear wheel bearing and hub assembly engineered for 2003-2006 Ford Expedition and 2003-2006 Lincoln Navigator models. The hub uses OE-developed validation methods to control design, materials, and manufacturing processes, helping deliver consistent wheel-end performance. Its precision bearing geometry, 87.03 mm wheel pilot diameter, 90.01 mm brake pilot diameter, 99.35 mm hub pilot diameter, and 55.75 mm flange offset support accurate fitment and dependable operation. This part cross-references MOOG 541001 and SKF BR930635 for the same application.

What It Helps Address

• Wheel bearing noise from worn or rough hub components
• Vibration felt through the chassis or steering during driving
• ABS warning concerns related to wheel speed signal issues
• Brake performance inconsistency caused by excessive hub runout
• Loose or unstable rear wheel-end operation

Installation Notes and Tips

Confirm rear fitment by matching the vehicle year, make, model, and driven application before installation. Inspect the mounting surface, axle interface, and brake components for wear or contamination, and verify that the ABS connector and sensor path are clean and properly seated. Use the listed hub and pilot dimensions to compare against the original part before final assembly.

Quality Assurance

Timken validates hub bearing assemblies with OE-developed testing and uses premium seals, precision bearing surfaces, and tested ABS sensing components to support consistent performance in service.