Moog 515021 Wheel Bearing and Hub Assembly - Front

Moog 515021 Wheel Bearing and Hub Assembly Overview

The Moog 515021 wheel bearing and hub assembly is engineered for reliable performance on Ford F-250 Super Duty and F-350 Super Duty trucks. Designed to meet OEM specifications, this assembly ensures proper fitment and durability for heavy-duty applications.

• Compatible with Ford F-250 Super Duty and F-350 Super Duty models
• 55 spline quantity for secure axle engagement
• 8 wheel studs and 4 flange bolt holes for stable wheel mounting
• Wheel pilot and brake pilot diameters of 4.920 inches for precise alignment
• Modified circle flange shape with a 2.160-inch flange offset
• Flange diameter of 7.990 inches and bolt circle diameters of 170.000 mm and 6.690 inches
• Hub pilot diameter of 3.330 inches for accurate hub positioning
• Does not include an anti-lock brake sensor

Technical Details and Specifications

The Moog 515021 wheel bearing and hub assembly features a 55 spline count, ensuring a strong connection to the axle shaft. The assembly includes 8 wheel studs and 4 flange bolt holes, providing a secure mounting surface for the wheel. Both the wheel pilot and brake pilot diameters measure 4.920 inches, which helps maintain proper wheel and brake rotor alignment. The flange has a modified circle shape with a 2.160-inch offset, contributing to correct wheel positioning relative to the suspension. The flange diameter is 7.990 inches, and the bolt circle diameters are specified as 170.000 mm and 6.690 inches, matching the OEM bolt pattern for Ford Super Duty trucks. The hub pilot diameter of 3.330 inches ensures the hub centers correctly on the axle flange. This assembly does not include an anti-lock brake sensor, so it is intended for vehicles without ABS sensor integration at the hub.

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
• Addresses wheel vibration or noise caused by bearing wear
• Resolves issues with wheel hub looseness or play
• Corrects improper wheel alignment due to hub damage
• Prevents premature brake rotor wear by maintaining proper brake pilot alignment

Installation Notes and Tips

When installing the Moog 515021 wheel bearing and hub assembly, ensure the vehicle is securely lifted and supported. Verify that the spline count matches the axle shaft to avoid fitment issues. Clean the mounting surface thoroughly before installation to ensure proper seating. Torque all flange bolts and wheel studs to manufacturer specifications. Since this assembly does not include an anti-lock brake sensor, confirm compatibility with your vehicle’s ABS system before installation.

Quality Assurance and Warranty

Moog wheel bearing and hub assemblies are manufactured to meet or exceed OEM standards for durability and performance. The 515021 part number undergoes rigorous quality control to ensure reliable operation under heavy-duty conditions typical of Ford F-250 Super Duty and F-350 Super Duty trucks. Moog typically offers a limited warranty on their parts; please refer to official Moog documentation for specific warranty details.