National 710921 Drive Axle Shaft Seal - Front Right

Drive Axle Shaft Seal for Nissan R180A Differential

National 710921 is a metric drive axle shaft seal built for front right applications using the Nissan R180A differential. It is specified with a polyacrylate sealing material, 39.000 mm shaft diameter, and 82.200 mm outside diameter for a precise service replacement.

Use this seal when servicing front axle leakage on select Nissan, INFINITI, and Suzuki models. National 710921 is engineered for the drive axle shaft seal position and supports a direct-fit repair on vehicles such as the Nissan Frontier, Nissan Pathfinder, and INFINITI QX80.

Key Features

• Drive axle shaft seal for front right placement
• Polyacrylate sealing material for drivetrain sealing applications
• Metric dimensions: 39.000 mm shaft diameter and 82.200 mm outside diameter
• Housing bore: 82.000 mm
• Overall width with side lip: 20.500 mm
• Oil seal design for axle and differential service
• National 710921 part number for accurate ordering and lookup

Detailed Description

National 710921 is a drive axle shaft oil seal in the 710900 series, made for vehicles equipped with the Nissan R180A differential. The seal measures 1.535 in. inside diameter, 3.236 in. outside diameter, and 0.512 in. width, with a 0.807 in. overall width including the side lip. Its metric sizing and polyacrylate construction make it a practical replacement for front right axle seal service where dimensional accuracy matters. This part cross-references Nissan 40227-EA000 and SL260357 for the same application.

What It Helps Repair

• Front axle seal leaks at the differential output
• Gear oil seepage around the drive axle shaft
• Contamination from a worn or hardened seal lip
• Service issues on Nissan R180A differential-equipped vehicles
• Replacement needs during axle or differential maintenance

Installation Notes and Tips

Confirm the vehicle uses the Nissan R180A differential and verify the front right position before installation. Match the shaft and housing bore dimensions to the removed seal, and inspect the axle shaft surface for wear, scoring, or corrosion that could affect sealing performance. Clean the bore thoroughly and seat the seal evenly to avoid distortion.

Quality Assurance

National has supplied sealing solutions for more than 75 years and continues to develop sealing components for modern vehicle service needs. National 710921 reflects that focus with a dimensionally specific replacement seal for driveline repair.