National 710839 Differential Pinion Seal - Front Outer

National 710839 Differential Pinion Seal

The National 710839 differential pinion seal is a metric oil seal built for front outer applications on select Jeep driveline setups. It uses a fluoro-elastomer sealing material and a counter-clockwise spiral lip design to help maintain a tight seal at the pinion shaft.

Compatible with Jeep Commander and Jeep Grand Cherokee front outer differential applications, this seal is sized for a 40.000 mm shaft and a 72.000 mm housing bore. National 710839 is part of the 710800 series and is engineered for precise sealing dimensions in driveline and axle service.

Key Features

• Part number: 710839
• Differential pinion seal / oil seal for driveline and axle service
• Fluoro-elastomer material for sealing performance
• Counter-clockwise spiral lip design
• Metric dimensions: 40.000 mm shaft, 72.000 mm housing bore
• Outside diameter: 72.200 mm; width: 10.000 mm
• Overall width with side lip: 17.000 mm
• Series: 710800

Product Details

National 710839 is a differential pinion seal designed around exact metric dimensions for front outer axle service. The seal measures 1.575 in. inside diameter, 2.843 in. outside diameter, and 0.394 in. thickness, with a 0.670 in. overall width including the side lip. Its fluoro-elastomer construction and spiral lip profile are specified for sealing at the pinion shaft where consistent contact and dimensional accuracy matter.

This part cross-references Dorman - HELP 15754 for the same application. It also cross-references Mopar 52111953AC for the same application.

Vehicle Fitment

• Fits 2006-2010 Jeep Commander, front outer, with 7.875 in. ring gear; with Chrysler C200F differential; independent front suspension.
• Fits 2006-2010 Jeep Commander, front outer, with 7.875 in. ring gear; with Chrysler C200FE differential; independent front suspension.
• Fits 2005-2010 Jeep Grand Cherokee, front outer, with 7.875 in. ring gear; with Chrysler C200FE differential; independent front suspension.
• Fits 2005-2010 Jeep Grand Cherokee, front outer, with 7.875 in. ring gear; with Chrysler C200F differential; independent front suspension.

Common Service Uses

• Oil seepage at the differential pinion area
• Seal wear from shaft rotation and age
• Fluid loss around the front outer differential seal
• Noise or contamination concerns tied to a leaking pinion seal
• Replacement during differential service on Jeep Commander or Jeep Grand Cherokee

Installation Notes

Verify shaft diameter, housing bore, and differential configuration before installation. Clean the sealing surface thoroughly and inspect the pinion shaft for wear, grooves, or corrosion that could affect seal life. Confirm the vehicle uses the listed Chrysler C200F or C200FE differential and 7.875 in. ring gear application before ordering National 710839.

Quality Assurance

National has supplied sealing solutions for more than 75 years and continues to develop OE-style sealing components for modern vehicles. National 710839 reflects that focus on dimensional accuracy and driveline sealing performance.