Timken SP620301 Wheel Bearing and Hub Assembly - Front

Timken SP620301 Wheel Bearing and Hub Assembly Overview

The Timken SP620301 wheel bearing and hub assembly is engineered for reliable performance in heavy-duty Chevrolet and GMC trucks. Designed specifically for models like the Sierra 2500 HD, Sierra 3500 HD, Silverado 2500 HD, Silverado 3500 HD, Suburban 2500, and Yukon XL 2500, this non-driven hub assembly ensures precise fitment and durability.

• Flange bolt hole quantity: 4 for secure mounting
• Wheel pilot diameter: 123.99 mm (4.881 inches)
• Brake pilot diameter: 126.95 mm (5.000 inches)
• Wheel stud quantity: 8 for enhanced wheel stability
• Hub pilot diameter: 114.04 mm (4.490 inches)
• Flange offset: 2.927 mm (74.35 inches)
• Flange diameter: 221.30 mm (8.713 inches)
• Bolt circle diameter: 180.00 mm (7.087 inches)
• Drive type: Non-driven hub assembly

Detailed Product Description

The Timken SP620301 is a wheel bearing and hub assembly designed to meet the demanding requirements of heavy-duty Chevrolet and GMC trucks. This assembly features a flange with four bolt holes and eight wheel studs, providing a secure and stable connection to the wheel. The precise wheel pilot diameter of 123.99 mm (4.881 inches) and brake pilot diameter of 126.95 mm (5.000 inches) ensure proper alignment with the brake components and wheel, reducing vibration and wear. The hub pilot diameter of 114.04 mm (4.490 inches) supports accurate hub positioning on the axle flange. With a flange offset of 2.927 mm (74.35 inches) and a flange diameter of 221.30 mm (8.713 inches), this assembly is engineered for optimal fit and function on non-driven axles of compatible Chevrolet and GMC models.

Compatible Vehicles and Applications

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

• Chevrolet Sierra 2500 HD and 3500 HD
• Chevrolet Silverado 2500 HD and 3500 HD
• Chevrolet Suburban 2500
• GMC Sierra 2500 HD and 3500 HD
• GMC Yukon XL 2500

Common Issues Addressed by Timken SP620301

• Wheel bearing noise or roughness during operation
• Excessive wheel play or looseness
• Uneven brake wear due to misalignment
• Vibration or wobbling at highway speeds
• Corrosion or damage to existing hub assembly

Installation Notes and Tips

• Ensure the vehicle is securely lifted and supported before installation
• Clean the axle flange and mounting surfaces thoroughly
• Verify bolt hole alignment and torque flange bolts to manufacturer specifications
• Check wheel stud condition and replace if necessary
• Use proper tools to avoid damage to the bearing and hub assembly during installation

Quality Assurance and Warranty

Timken manufactures the SP620301 wheel bearing and hub assembly to meet strict quality standards, ensuring durability and reliable performance. This part is backed by Timken's limited warranty against defects in materials and workmanship, providing confidence in its long-term use on Chevrolet and GMC heavy-duty trucks.