National 711063 Differential Pinion Seal - Rear Outer

Product Overview

National 711063 is a differential pinion seal built for specific rear differential applications that require a metric oil seal with a bi-directional lip design. It uses fluoro-elastomer material for sealing performance in driveline service and is sized to match the listed housing bore, shaft, and outside diameter dimensions.

Compatible with a range of Buick, Chevrolet, GMC, Cadillac, Saturn, and Pontiac applications, this seal is specified for vehicles such as the Chevrolet Equinox, GMC Acadia, and Buick Enclave in the fitments shown. Part number 711063 is also referenced by cross numbers used for the same application.

Key Features

• Fluoro-elastomer construction for demanding sealing applications
• Bi-directional lip design for rotational sealing performance
• Metric dimensions for accurate differential fitment
• Designed as an oil seal for driveline and axle service
• National Series 711000 product line

Detailed Description

National 711063 is a differential pinion seal engineered for rear outer applications listed in the fitment data. The seal’s 35 mm shaft diameter, 78.2 mm outside diameter, and 9 mm width help ensure the correct dimensional match for the specified differential assemblies. Its fluoro-elastomer material and bi-directional lip design support sealing at the pinion area where gear oil retention is critical.

This part fits 2007-2011 Chevrolet Equinox, rear outer; 2012-2017 Chevrolet Equinox, rear outer; 2007-2011 GMC Acadia, rear outer; 2012-2016 GMC Acadia, rear outer; and other listed Buick, Chevrolet, GMC, Cadillac, Saturn, and Pontiac applications. Part number 711063 is a direct reference for buyers searching for a differential pinion seal for these driveline configurations.

This part cross-references SKF (e.g., 13549A) for the same application.

What It Is Used For

• Stopping gear oil leakage at the differential pinion area
• Replacing a worn or hardened pinion seal
• Restoring sealing performance after driveline service
• Addressing seepage around the rear differential housing
• Maintaining proper fluid retention in the axle assembly

Installation Notes and Tips

Verify the differential type, ring gear specification, and axle configuration before ordering. This seal is listed for specific rear outer and N/A positions, so match the vehicle application exactly to the fitment table. Inspect the pinion surface and housing bore for wear or damage before installation to help achieve a proper seal.

Quality Assurance

National has supplied sealing solutions for more than 75 years and continues to develop sealing products for modern driveline applications. Part number 711063 reflects that sealing-focused engineering approach for differential service.