National 710593 Differential Pinion Seal - Front Outer

National 710593 Differential Pinion Seal

National 710593 is a differential pinion seal built for driveline sealing at the front outer position on select Jeep Liberty and Dodge Nitro applications. It uses fluoro-elastomer material and precise inch and metric dimensions to support a proper seal around the pinion shaft and housing bore.

Key Features

• Part number: 710593
• Part description: oil seal for differential pinion service
• Inside diameter: 1.803 in. / 45.800 mm
• Outside diameter: 3.071 in. / 78.000 mm
• Flanged outside diameter: 3.406 in. / 86.500 mm
• Thickness/width: 0.551 in. / 14.000 mm
• Housing bore: 3.067 in. / 77.900 mm
• Material: fluoro-elastomer
• Series: 710500
• Type: 74

Detailed Description

This National differential pinion seal is engineered for the front outer driveline position on 2002-2012 Jeep Liberty and 2007-2011 Dodge Nitro models with a 7.125 in. ring gear, Spicer 30A axle, and independent front suspension. The seal dimensions are specified in both inch and metric units to help match the shaft, housing bore, and flange requirements during service. National has focused on sealing solutions for more than 75 years, and this part reflects that experience in a driveline oil seal application. This part cross-references Timken SL260075 for the same application.

What It Helps Address

• Gear oil seepage at the differential pinion area
• Seal wear from shaft rotation and age
• Fluid loss around the front outer driveline seal
• Contamination entering the pinion seal area
• Service replacement for a leaking OE-style oil seal

Installation Notes and Tips

• Verify the axle configuration, ring gear size, and suspension setup before ordering.
• Inspect the pinion shaft surface and housing bore for scoring or corrosion before installation.
• Clean the sealing surfaces thoroughly so the new seal seats evenly.
• Confirm the seal dimensions against the removed part: 1.803 in. shaft, 3.067 in. housing bore, and 0.551 in. width.
• Use the exact fitment notes for Jeep Liberty and Dodge Nitro front outer applications.

Quality Assurance

National designs sealing components for modern vehicle service and backs this part with its long-standing sealing product expertise. The 710593 is built as a precision differential pinion seal for the listed Jeep and Dodge applications.