SKF BR31590 Differential Pinion Bearing - Rear Outer

Reliable Differential Pinion Bearing for Oldsmobile and Pontiac

The SKF BR31590 differential pinion bearing is engineered to meet the specific needs of classic Oldsmobile and Pontiac vehicles, including models like the 88, 98, and Catalina. Designed with precision, this bearing ensures smooth operation and durability in your driveline system.

• Inside diameter of 1.313 inches for accurate fitment
• Width of 1.156 inches to maintain proper bearing alignment
• Compatible with Oldsmobile 88, 98, and Pontiac Catalina models
• Part number BR31590 for easy identification and ordering
• Manufactured by SKF, a trusted name in automotive bearings

Technical Details and Specifications

The SKF BR31590 differential pinion bearing features an inside diameter of 1.313 inches, which is critical for fitting securely onto the pinion shaft. Its width measures 1.156 inches, providing the necessary support and spacing within the differential assembly. These dimensions are essential for maintaining the correct preload and ensuring the longevity of the bearing under typical driving conditions. This bearing is designed specifically for driveline and axle applications, focusing on differential pinion support in select Oldsmobile and Pontiac vehicles.

Compatible Vehicles and Applications

This differential pinion bearing is compatible with several classic American cars, including:

• Oldsmobile 88
• Oldsmobile 98
• Pontiac Catalina

Using the SKF BR31590 bearing in these models helps address common driveline issues such as excessive play in the differential, noise from worn bearings, and uneven wear on pinion gears.

Common Issues Addressed by This Bearing

• Eliminates differential pinion shaft play
• Reduces noise caused by worn or damaged bearings
• Prevents premature wear of differential gears
• Maintains proper alignment within the differential assembly
• Supports smooth driveline operation under load

Installation Notes and Tips

When installing the SKF BR31590 differential pinion bearing, ensure the bearing is pressed onto the pinion shaft evenly to avoid damage. Verify the inside diameter of 1.313 inches matches the pinion shaft size for a secure fit. Proper bearing preload and alignment are critical to prevent premature wear. It is recommended to inspect the differential housing and related components for wear or damage before installation.

Quality Assurance and Warranty

SKF is known for manufacturing bearings that meet stringent quality standards. The BR31590 differential pinion bearing is produced with high-grade materials and precision engineering to ensure reliable performance. While specific warranty details are not provided, SKF products typically come with manufacturer-backed quality assurance to support durability and fitment accuracy.