National 3982 Wheel Bearing - Rear Inner or Rear Outer

National 3982 Taper Bearing Cone Overview

The National 3982 wheel bearing cone is engineered for driveline and axle applications requiring precise fit and durability. Designed with a 2.5-inch (63.5 mm) cone bore and a cone length of 1.183 inches (30.048 mm), this taper bearing cone ensures reliable performance in compatible vehicle models.

• Cone Bore Diameter: 2.5000 inches (63.5000 mm)
• Cone Length: 1.1830 inches (30.0480 mm)
• Cone Radius: 0.1400 inches (3.5560 mm)
• Part Type: Taper Bearing Cone
• Part Number: 3982

Detailed Specifications and Design

The National 3982 taper bearing cone is manufactured to meet strict dimensional tolerances, providing a precise fit for wheel bearing assemblies. The 2.5-inch bore diameter and 1.183-inch cone length accommodate specific axle and driveline configurations, ensuring smooth rotation and load distribution. The 0.14-inch cone radius contributes to the bearing’s ability to handle radial and axial loads effectively, which is critical for maintaining wheel stability and vehicle safety.

Compatible Vehicle Applications

This wheel bearing cone is compatible with various makes and models that require a 2.5-inch bore taper bearing cone. It is commonly used in driveline and axle assemblies of trucks and SUVs where National parts are specified. For example, it fits certain Ford F-Series, Chevrolet Silverado, and Dodge Ram models that utilize this bearing size. Always verify fitment with your vehicle’s service manual or parts catalog before installation.

Common Issues Addressed by National 3982

• Wheel bearing noise due to worn or damaged cones
• Excessive play or looseness in the wheel hub assembly
• Uneven tire wear caused by bearing failure
• Vibration or roughness during vehicle operation
• Preventing premature axle or hub damage

Installation Notes and Tips

Proper installation of the National 3982 taper bearing cone is essential for optimal performance. Clean the bearing surfaces thoroughly before assembly and apply the recommended grease. Use a calibrated torque wrench to tighten the bearing nut to manufacturer specifications. Avoid hammering or forcing the cone into place to prevent damage. It is advisable to inspect the matching cup and other related components during installation to ensure overall system integrity.

Quality Assurance and Warranty

National wheel bearing components are manufactured to meet industry standards for durability and precision. The 3982 taper bearing cone undergoes rigorous quality control to ensure dimensional accuracy and material integrity. While specific warranty details may vary, National typically offers coverage against manufacturing defects. Consult the product documentation or authorized distributor for warranty terms related to this part.