Timken 515021 Wheel Bearing and Hub Assembly - Front

Timken Wheel Bearing and Hub Assembly Overview

The Timken 515021 wheel bearing and hub assembly is engineered for reliable performance in Ford F-250 Super Duty and F-350 Super Duty trucks. Designed to meet precise specifications, this driven hub assembly ensures proper fitment and durability for demanding driveline applications.

• 55 spline quantity for secure drivetrain engagement
• 4 flange bolt holes with a 170 mm (6.693 inch) bolt circle diameter
• 8 wheel studs for stable wheel mounting
• Wheel pilot diameter of 124.97 mm (4.920 inches) and brake pilot diameter of 129.01 mm (5.080 inches)
• Hub pilot diameter of 113.90 mm (4.484 inches) for accurate alignment
• Flange offset of 2.146 inches (54.50 mm) and flange diameter of 203 mm (7.992 inches)
• Designed as a driven hub for rear axle applications

Detailed Product Description

The Timken 515021 wheel bearing and hub assembly is specifically designed for Ford F-250 Super Duty and F-350 Super Duty models, providing a precise fit and reliable operation. The assembly features a 55-spline driven design that ensures proper torque transfer and drivetrain compatibility. With 8 wheel studs and 4 flange bolt holes arranged on a 170 mm bolt circle diameter, this hub assembly supports secure wheel mounting and brake component alignment. The wheel pilot diameter of approximately 125 mm and brake pilot diameter near 129 mm help maintain concentricity between the wheel and brake rotor, reducing vibration and uneven wear. The flange offset and diameter are engineered to match factory specifications, ensuring proper clearance and fitment within the vehicle’s suspension and brake system.

Common Applications and Problem Solving

• Replacement for worn or damaged wheel bearing and hub assemblies on Ford F-250 Super Duty and F-350 Super Duty trucks
• Eliminates wheel vibration caused by bearing wear or hub misalignment
• Resolves noise issues related to failing wheel bearings
• Restores proper wheel and brake rotor alignment for improved braking performance
• Addresses axle spline wear affecting drivetrain engagement

Installation Notes and Tips

• Ensure compatibility with Ford F-250 Super Duty and F-350 Super Duty models before installation
• Use proper torque specifications for flange bolts and wheel studs to avoid premature wear
• Inspect axle splines and surrounding components for damage prior to assembly
• Clean mounting surfaces thoroughly to ensure accurate hub pilot seating
• Verify wheel and brake rotor fitment after installation to confirm alignment

Quality Assurance and Warranty

Timken manufactures the 515021 wheel bearing and hub assembly to meet stringent quality standards, ensuring durability and 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 reliability for Ford F-250 Super Duty and F-350 Super Duty applications.