National 711083 Differential Pinion Seal - Rear Outer

National 711083 Differential Pinion Seal

National 711083 is a differential pinion seal built for specific rear outer applications with VersaTrak Fluid System and Magna Steyr Differential notes. It uses a fluoro-elastomer sealing material and a clockwise-spiral lip design to help maintain a secure seal at the pinion shaft.

Key Features

• Fluoro-elastomer construction for sealing performance in driveline service.
• Clockwise-spiral lip design for controlled sealing contact.
• Metric dimensions for accurate housing and shaft matching.
• Part of National Series 711000.
• National 711083 is a direct-fit sealing component for listed applications.

Detailed Description

This differential pinion seal is engineered around the listed shaft and housing dimensions, including a 1.890-inch shaft size, 2.685-inch outside diameter, and 0.315-inch width. The design supports a precise fit in compatible driveline assemblies and is intended for vehicles such as the Buick Rendezvous, Pontiac Montana, and Chevrolet Uplander when equipped with the specified rear outer configuration. National 711083 is also cross-referenced to Gates 18906 and 88896053 for the same application.

What It Is Used For

• Sealing differential pinion areas where gear oil retention is critical.
• Replacing a worn seal that can allow fluid seepage.
• Addressing contamination from a compromised driveline seal.
• Restoring proper sealing in rear outer differential service points.

Installation Notes and Tips

Verify the shaft diameter, housing bore, and application notes before installation. Clean the sealing surface thoroughly and inspect the pinion area for wear or scoring that could affect seal life. Confirm the vehicle’s differential configuration matches the listed fitment before ordering.

Quality Assurance

National has supplied premium sealing solutions for more than 75 years and continues to develop sealing products for modern driveline systems.