National B-73 Wheel Bearing - Front Outer

National B-73 Wheel Bearing Overview

The National B-73 wheel bearing is a single row angular contact bearing built for front outer wheel applications. Manufactured to meet or exceed OE quality standards, it is engineered for precise fitment and durable service in classic Buick, Cadillac, and Oldsmobile applications.

Compatible with 1957-1961 Cadillac DeVille and Eldorado, 1958 Buick Century and Roadmaster, 1959-1961 Oldsmobile 98, 1961 Oldsmobile Starfire, and 1959-1960 Buick LeSabre front outer positions, the B-73 is a direct-fit service part for targeted restoration and repair work.

Key Features

• Single row angular contact wheel bearing design
• OE-quality construction for consistent performance
• National B-73 part number for accurate ordering and replacement
• 0.844 in bore and 2.250 in outside diameter
• FWBS series, Type E-2 configuration
• Built to exacting manufacturing standards for extended bearing life

Detailed Product Description

National B-73 is a wheel bearing designed for front outer service on select vintage GM vehicles. Key dimensions include a 0.844 inch bore, 1.386 inch inner race outside diameter, 2.250 inch outer race outside diameter, and 0.800 inch overall width. These measurements support accurate bearing selection when servicing the hub and spindle assembly.

This part cross-references Gates B73 for the same application. When searching for a replacement wheel bearing for 1957-1959 Cadillac DeVille, 1958 Buick Century, or 1959-1961 Oldsmobile 98 front outer service, National B-73 provides the dimensional match needed for proper repair.

Common Uses

• Replacing a worn front outer wheel bearing
• Addressing wheel end noise during driving
• Correcting looseness or play in the front hub assembly
• Restoring smooth wheel rotation on classic Buick, Cadillac, and Oldsmobile models
• Supporting accurate front suspension and wheel end service

Installation Notes and Tips

Verify all bearing dimensions, race measurements, and vehicle application details before installation. Clean and inspect the spindle, hub, and related components for wear or scoring, and confirm the bearing seats properly during assembly. For best results, follow the vehicle service manual for preload, lubrication, and torque specifications.

Quality Assurance

National manufactures this bearing to meet or exceed OE quality expectations, using premium materials and controlled production standards to support long service life. The B-73 is intended for dependable wheel end repair where correct fitment and consistent bearing performance matter.