Timken SP450703 Wheel Bearing and Hub Assembly - Front

Timken SP450703 Wheel Bearing and Hub Assembly Overview

The Timken SP450703 wheel bearing and hub assembly is engineered for reliable performance in Chevrolet Express 1500 and GMC Savana 1500 vehicles. Designed as a non-driven hub, this assembly ensures precise fitment and durability for your driveline system.

• Non-driven wheel bearing and hub assembly
• 6 wheel studs for secure wheel mounting
• 3 flange bolt holes with a 139.7 mm (5.5 inch) bolt circle diameter
• Wheel pilot diameter of 77.69 mm (3.059 inches) for accurate wheel alignment
• Brake pilot diameter of 78.40 mm (3.087 inches) to support brake component fitment
• Hub pilot diameter of 99.35 mm (3.911 inches) for proper hub centering
• Flange diameter of 179 mm (7.047 inches) with a flange offset of 49.78 mm (1.960 inches)

Detailed Product Description

The Timken SP450703 is a precision-engineered wheel bearing and hub assembly designed specifically for the Chevrolet Express 1500 and GMC Savana 1500 models. This non-driven hub assembly features six wheel studs and three flange bolt holes arranged on a 139.7 mm bolt circle diameter, providing a secure and stable mounting surface for your wheels. The assembly’s wheel pilot diameter of 77.69 mm and brake pilot diameter of 78.40 mm ensure proper alignment and fitment of wheels and brake components, reducing vibration and enhancing safety. Additionally, the hub pilot diameter of 99.35 mm centers the hub accurately on the axle, while the flange diameter and offset maintain correct positioning relative to the vehicle’s suspension and brake system.

Common Applications and Problem Resolution

• Replacement for worn or damaged wheel bearing and hub assemblies on Chevrolet Express 1500 and GMC Savana 1500
• Eliminates wheel vibration caused by bearing wear or hub misalignment
• Resolves noise issues such as humming or grinding from the front wheel area
• Restores proper wheel mounting and brake component alignment
• Addresses uneven tire wear related to hub or bearing failure

Installation Notes and Tips

• Ensure compatibility with Chevrolet Express 1500 and GMC Savana 1500 before installation
• Use proper torque specifications for flange bolts and wheel studs to avoid premature wear
• Inspect related components such as axle shafts and brake rotors during installation
• Clean mounting surfaces thoroughly to ensure accurate fitment and prevent contamination
• Follow manufacturer guidelines for bearing lubrication and break-in procedures

Quality Assurance and Warranty

Timken manufactures the SP450703 wheel bearing and hub assembly to meet strict quality standards, ensuring durability and reliable performance. This part is backed by Timken’s warranty coverage, which protects against defects in materials and workmanship under normal use. Using genuine Timken components helps maintain vehicle safety and driveline integrity.