National 710735 Differential Pinion Seal - Rear Outer

National 710735 Differential Pinion Seal

National 710735 is a metric differential pinion seal built for rear outer applications that require a 45.000 mm shaft diameter, 74.200 mm outside diameter, and 11.000 mm width. Its clockwise-spiral lip design and polyacrylate construction support sealing performance in Toyota and Lexus axle assemblies.

Key Features

• Part number 710735 oil seal for differential pinion applications
• Inside diameter: 1.772 in. / 45.000 mm
• Outside diameter: 2.921 in. / 74.200 mm
• Width: 0.433 in. / 11.000 mm
• Overall width with side lip: 0.709 in. / 18.000 mm
• Clockwise-spiral lip design for controlled sealing action
• Polyacrylate sealing material
• Housing bore: 2.913 in. / 74.000 mm

Detailed Description

This National differential pinion seal is engineered for rear outer axle locations and matches the metric dimensions commonly used in Toyota axle assemblies. It is listed for 2006-2007 Lexus LX470, 2008-2011 Lexus LX570, 2013-2018 Lexus LX570, 2008-2011 Toyota Land Cruiser, 2013-2018 Toyota Land Cruiser, and 2007-2019 Toyota Tundra with a 9.5 inch ring gear and Toyota axle. The 710735 seal is also cross-referenced to SKF 17779A for the same application.

What It Helps Address

• Gear oil seepage at the differential pinion area
• Contamination entering the axle housing through a worn seal
• Leak-related fluid loss around the rear outer pinion location
• Seal replacement needs during differential service
• Fitment matching for Toyota and Lexus rear axle repairs

Installation Notes and Tips

Verify the shaft diameter, housing bore, and overall width before installation to confirm the seal matches the axle assembly. Inspect the pinion surface for wear, scoring, or corrosion, since surface damage can affect sealing performance. Clean the bore and sealing surfaces thoroughly and install the seal squarely to avoid distortion. Confirm rear outer placement and axle configuration on Toyota Tundra, Land Cruiser, and Lexus LX470 or LX570 models before final assembly.

Quality Assurance

National has supplied sealing solutions for more than 75 years and continues to develop applications for modern vehicles. Part number 710735 reflects that experience with a metric oil seal design for differential service.