Timken 513011K Wheel Bearing and Hub Assembly - Front or Rear

Timken 513011K Wheel Bearing and Hub Assembly Overview

The Timken 513011K wheel bearing and hub assembly is engineered for reliable driveline performance in select Buick, Chevrolet, Oldsmobile, and Pontiac vehicles. Designed to meet precise specifications, this assembly ensures proper fit and function for models such as the Buick Century, Chevrolet Celebrity, and Pontiac Fiero.

• 33 spline quantity for secure axle engagement
• 5 wheel studs for stable wheel mounting
• 3 flange bolt holes with a 100 mm bolt circle diameter
• Wheel pilot diameter of 2.245 inches (57.02 mm) for accurate wheel alignment
• Brake pilot diameter of 2.273 inches (57.73 mm) to support brake component fitment
• Hub pilot diameter of 2.795 inches (71.00 mm) for precise hub positioning
• Flange offset of 1.650 inches (41.91 mm) to maintain correct wheel offset
• Flange diameter of 125.40 mm (4.937 inches) for compatibility with OEM components
• Designed for driven axle applications

Detailed Product Description

The Timken 513011K wheel bearing and hub assembly is a critical component in the driveline and axle system, providing a secure mounting point for the wheel and enabling smooth rotation. With 33 splines, this assembly ensures a tight fit on the axle shaft, reducing play and wear. The 5 wheel studs and 3 flange bolt holes with a 100 mm bolt circle diameter offer a robust connection to the wheel and brake components. The precise wheel pilot and brake pilot diameters help maintain proper alignment and braking performance, while the hub pilot diameter ensures the hub seats correctly on the axle. The flange offset and diameter are designed to match factory specifications, preserving the vehicle's handling characteristics.

Compatible Vehicles and Applications

This Timken 513011K assembly is compatible with a range of GM vehicles, including:

• Buick Century and Skylark
• Chevrolet Celebrity and Citation series
• Oldsmobile Cutlass Ciera and Omega
• Pontiac Fiero and Phoenix

It is intended for driven axle use, making it suitable for front or rear wheel drive configurations depending on the model.

Common Issues Addressed by This Assembly

• Eliminates wheel bearing noise caused by wear or damage
• Resolves wheel wobble or play due to worn hub components
• Restores proper wheel alignment and brake rotor positioning
• Prevents premature tire wear from hub misalignment
• Ensures secure wheel mounting to avoid vibration or loosening

Installation Notes and Tips

• Verify spline count and pilot diameters match vehicle specifications before installation
• Use proper torque settings on flange bolts and wheel studs to manufacturer recommendations
• Inspect axle shaft and surrounding components for wear or damage during replacement
• Clean mounting surfaces to ensure proper seating of the hub assembly
• Check wheel bearing preload if applicable to the vehicle model

Quality Assurance and Warranty

Timken manufactures the 513011K wheel bearing and hub assembly to meet OEM standards for durability and performance. Each unit undergoes rigorous testing to ensure dimensional accuracy and bearing integrity. While specific warranty terms may vary, Timken products typically include coverage against defects in materials and workmanship, providing confidence in long-term reliability.