Timken SP620302 Wheel Bearing and Hub Assembly - Front

Timken SP620302 Wheel Bearing and Hub Assembly Overview

The Timken SP620302 wheel bearing and hub assembly is engineered for reliable performance in heavy-duty applications. Designed specifically for Chevrolet and GMC Sierra 3500 HD and Silverado 3500 HD models, this driven hub assembly ensures precise fitment and durability.

• 36 spline quantity for secure axle engagement
• 4 flange bolt holes for stable mounting
• 8 wheel studs for reliable wheel attachment
• Wheel pilot diameter of 123.99 mm (4.881 inches) for accurate wheel centering
• Brake pilot diameter of 126.95 mm (4.998 inches) to support brake component alignment
• Hub pilot diameter of 114.04 mm (4.490 inches) for proper hub positioning
• Flange offset of 2.927 mm (74.35 inches) and flange diameter of 221.30 mm (8.713 inches) for correct flange placement
• Bolt circle diameter of 180.00 mm (7.087 inches) matching OEM specifications

Detailed Product Description

The Timken SP620302 is a wheel bearing and hub assembly designed to meet the demanding requirements of Chevrolet and GMC heavy-duty trucks, including the Sierra 3500 HD and Silverado 3500 HD. This driven hub assembly features a 36-spline axle interface, ensuring a secure connection to the drivetrain. The assembly includes 8 wheel studs and 4 flange bolt holes, providing a robust mounting platform for wheels and brake components. Precise pilot diameters for the wheel, brake, and hub ensure proper alignment and reduce vibration, contributing to vehicle stability and safety. The flange offset and diameter are engineered to OEM standards, maintaining correct wheel positioning and brake clearance.

Compatible Vehicles and Applications

• Chevrolet Sierra 3500 HD
• GMC Sierra 3500 HD
• Chevrolet Silverado 3500 HD
• GMC Silverado 3500 HD

Common Issues Addressed by Timken SP620302

• Wheel bearing noise or roughness during operation
• Excessive play or looseness in the wheel hub
• Vibration or wobbling at the wheel assembly
• Brake rotor misalignment or uneven wear
• Failure of original hub assembly due to wear or damage

Installation Notes and Tips

• Ensure compatibility with Chevrolet and GMC 3500 HD models before installation
• Use proper torque specifications for flange bolts and wheel studs
• Inspect axle splines and mating surfaces for wear prior to assembly
• Clean mounting surfaces to prevent contamination and ensure proper fit
• Verify wheel pilot and brake pilot diameters match OEM components

Quality Assurance and Warranty

Timken manufactures the SP620302 wheel bearing and hub assembly to meet strict quality standards, ensuring durability and reliable performance under heavy-duty conditions. This part is backed by Timken's limited warranty against defects in materials and workmanship, providing confidence in long-term use.