National 3982 Wheel Bearing - Rear Inner or Rear Outer

National 3982 Taper Bearing Cone

National 3982 is a taper bearing cone built with premium-grade steel and crowned raceways and rollers to promote even load distribution. It is a direct-fit wheel bearing component for driveline and axle service where precise cone geometry and consistent rolling contact matter.

Key Features

• Premium-grade steel construction for bearing service durability
• Crowned raceways and rollers to support even load distribution
• Cone bore: 2.5000 in. / 63.5000 mm
• Cone length: 1.1830 in. / 30.0480 mm
• Cone radius: 0.1400 in. / 3.5560 mm
• Part type: taper bearing cone
• Part number: 3982

Detailed Description

This National wheel bearing cone is engineered for applications that require a tapered roller bearing component with accurate dimensions and stable load handling. The crowned raceway and roller profile helps distribute load across the bearing surface more evenly, which is important in axle and wheel-end service where alignment and wear patterns affect performance. National 3982 is a practical replacement choice when servicing bearing assemblies on vehicles such as Ford F-150 and Chevrolet Silverado applications that call for this bearing specification. This part cross-references SKF (e.g., BR3982) for the same application.

What It Helps Address

• Wheel-end noise caused by worn bearing cones
• Excessive play from deteriorated taper bearing surfaces
• Rough rotation in axle or hub bearing service
• Uneven wear from damaged raceway contact areas
• Service issues during bearing inspection and rebuild work

Installation Notes and Tips

Verify cone bore, length, and radius against the original bearing before installation. Clean and inspect the mating race, spindle, and hub surfaces for scoring, heat damage, or contamination before assembly. Proper bearing preload and lubrication are critical for long service life, so follow the vehicle service procedure for the specific axle or hub design. Confirm application details for the exact Ford F-150 or Chevrolet Silverado configuration before ordering.

Quality Assurance

National manufactures this taper bearing cone with premium-grade steel and crowned rolling surfaces to support consistent load distribution in bearing service.