Timken NP123221 Wheel Bearing - Front Inner

Timken NP123221 Wheel Bearing Overview

The Timken NP123221 wheel bearing is engineered for reliable performance in Ford F-250 Super Duty and F-350 Super Duty trucks. Designed to meet precise specifications, this wheel bearing ensures proper fitment and durability for heavy-duty driveline applications.

• Inside diameter options: 1.796 inches (45.62 mm)
• Cone radius measurements: 0.138 inches and 3.50 inches
• Cone width dimensions: 1.000 inch (25.40 mm)
• Compatible with Ford F-250 Super Duty and F-350 Super Duty models
• Part number NP123221 for accurate identification

Technical Specifications and Design Details

The Timken NP123221 wheel bearing features dual inside diameter measurements of 1.796 inches and 45.62 millimeters, accommodating precise fitment requirements. The cone radius is specified at 0.138 inches and 3.50 inches, providing the necessary geometry for smooth rotation and load distribution. Additionally, the cone width is measured at 1.000 inch (25.40 mm), ensuring proper engagement within the hub assembly. These dimensions are critical for maintaining the driveline integrity of Ford F-250 Super Duty and F-350 Super Duty trucks.

Compatible Vehicles and Applications

This wheel bearing is specifically compatible with Ford F-250 Super Duty and F-350 Super Duty models, making it suitable for heavy-duty truck applications where durability and precision are essential. The Timken NP123221 is designed to replace worn or damaged wheel bearings in these vehicles, restoring proper wheel function and safety.

• Eliminates wheel noise caused by bearing wear
• Resolves vibration issues related to bearing failure
• Prevents premature tire wear due to improper bearing fit
• Addresses wheel hub looseness and instability
• Restores smooth wheel rotation and handling

Installation Notes and Tips

When installing the Timken NP123221 wheel bearing, ensure the hub assembly is clean and free of debris. Proper torque specifications should be followed to avoid bearing damage. It is recommended to inspect related components such as seals and axle shafts during installation. Use appropriate tools to press the bearing into place without applying excessive force to prevent distortion.

Quality Assurance and Warranty

Timken wheel bearings are manufactured to meet stringent quality standards, ensuring reliable performance in demanding conditions. The NP123221 part number undergoes rigorous testing for durability and dimensional accuracy. While specific warranty details may vary, Timken typically offers coverage against manufacturing defects to provide confidence in product longevity.