Timken SP550307 Wheel Bearing and Hub Assembly - Front, Front Left or Front Right

Timken SP550307 Wheel Bearing and Hub Assembly Overview

The Timken SP550307 wheel bearing and hub assembly is engineered for reliable driveline performance in select GM trucks and SUVs. Designed to meet the specific requirements of Cadillac Escalade, Chevrolet K1500, K1500 Suburban, Sierra 1500, Tahoe, and GMC Yukon models, this assembly ensures proper fit and function.

• 33 spline quantity for precise drivetrain engagement
• 3 flange bolt holes and 6 wheel studs for secure mounting
• Wheel pilot diameters of 3.055 inches (77.60 mm) and brake pilot diameters of 3.075 inches (78.11 mm)
• Hub pilot diameters measuring 3.910 inches (99.31 mm) for accurate alignment
• Flange offset of 2.234 inches (56.74 mm) and flange diameter of 7.165 inches (181.99 mm)
• Bolt circle diameter of 5.500 inches (139.70 mm) for compatibility with OEM specifications
• Designed for driven axle applications

Technical Details and Specifications

The Timken SP550307 assembly features a 33-spline driven design, ensuring compatibility with the drivetrain components of your GM vehicle. The flange includes 3 bolt holes and 6 wheel studs, providing a robust connection to the wheel hub. The wheel pilot diameter of approximately 3.055 inches (77.60 mm) and brake pilot diameter near 3.075 inches (78.11 mm) help maintain proper wheel and brake rotor alignment. The hub pilot diameter of 3.910 inches (99.31 mm) supports precise hub centering, reducing vibration and wear. Flange offset and diameter measurements align with factory specifications to maintain suspension geometry and wheel positioning.

Compatible Vehicles and Applications

This wheel bearing and hub assembly is compatible with the following vehicles:

• Cadillac Escalade
• Chevrolet K1500 and K1500 Suburban
• Chevrolet Sierra 1500
• Chevrolet Tahoe
• GMC Yukon

Use this part to replace worn or damaged wheel bearing and hub assemblies on these models to restore driveline integrity and wheel stability.

Common Issues Addressed by This Assembly

• Eliminates wheel bearing noise and roughness
• Resolves wheel vibration and wobble during driving
• Corrects uneven tire wear caused by hub misalignment
• Prevents brake rotor runout and associated braking issues
• Restores proper wheel mounting and stud integrity

Installation Notes and Tips

• Ensure vehicle is securely lifted and supported before removal
• Clean mounting surfaces thoroughly to prevent contamination
• Verify spline count and pilot diameters match OEM specifications
• Torque flange bolts and wheel studs to manufacturer-recommended values
• Inspect related components such as axle shafts and seals during installation

Quality Assurance and Warranty

Timken wheel bearing and hub assemblies are manufactured to meet or exceed OEM standards for durability and performance. The SP550307 part number undergoes rigorous quality control to ensure precise fit and long service life. Warranty coverage details are provided by Timken and typically include protection against defects in materials and workmanship under normal use conditions.