National 710741 Differential Pinion Seal - Front Outer

National 710741 Differential Pinion Seal

The National 710741 differential pinion seal is built for driveline sealing where the pinion shaft enters the axle housing. It uses a fluoro-elastomer sealing material and a counter-clockwise spiral lip design to help maintain a tight seal under rotating shaft conditions. This oil seal is a direct-fit style option for select Jeep Wrangler JK and Jeep Wrangler front outer applications.

Key Features

• Part number: 710741
• Part description: oil seal / differential pinion seal
• Fluoro-elastomer material for sealing performance
• Counter-clockwise spiral lip design
• Inside diameter: 1.844 in (46.838 mm)
• Outside diameter: 3.068 in (77.927 mm)
• Flanged outside diameter: 3.330 in (84.582 mm)
• Thickness/width: 0.535 in (13.589 mm)
• Housing bore: 3.063 in (77.800 mm)
• Shaft size: 1.844 in (46.838 mm)

Fitment Details

• Fits 2018 Jeep Wrangler JK, Front Outer — Fits with 7.125 (in) Ring Gear and Spicer 30-SF Axle.
• Fits 2018 Jeep Wrangler JK, Front Outer — Fits 8.5-inch Ring Gear and Spicer 44 Axle.
• Fits 2007-2017 Jeep Wrangler, Front Outer — Fits with 7.125 (in) Ring Gear and Spicer 30-SF Axle.
• Fits 2007-2017 Jeep Wrangler, Front Outer — Fits 8.5-inch Ring Gear and Spicer 44 Axle.

Detailed Description

National has supplied sealing solutions for more than 75 years, and the 710741 differential pinion seal reflects that focus on axle and driveline sealing. The fluoro-elastomer construction is selected for demanding oil-seal service, while the spiral lip profile helps manage shaft rotation at the pinion location. For Jeep Wrangler JK and Jeep Wrangler front outer applications, this seal is sized to match the listed shaft, housing bore, and outside diameter dimensions for proper sealing alignment.

This part cross-references Mopar 68004072AA and Timken SL260076 for the same application. It is also listed with interchange reference 2004670 and SKF 18760A.

What It Helps Address

• Differential gear oil leaking at the pinion area
• Oil seepage around the front outer axle seal location
• Contamination from a worn or hardened seal lip
• Loss of lubricant caused by seal wear at the shaft interface
• Noise or driveline concerns related to low axle lubricant level

Installation Notes and Tips

Verify the axle configuration, ring gear size, and axle type before ordering. This seal is listed for 2018 Jeep Wrangler JK front outer applications with either a 7.125-inch ring gear and Spicer 30-SF axle or an 8.5-inch ring gear and Spicer 44 axle, and for 2007-2017 Jeep Wrangler front outer applications with the same configuration notes. Confirm the housing bore, shaft diameter, and seal orientation during installation so the lip design seats correctly on the pinion shaft.

Quality Assurance

National is a long-established sealing brand with a history of producing drivetrain sealing components for automotive service. The 710741 is engineered as a precision oil seal for the specified Jeep Wrangler JK and Jeep Wrangler front outer fitments.