SKF 18831 Differential Pinion Seal - Rear

SKF 18831 Differential Pinion Seal

SKF 18831 is a differential pinion seal built for rear Dana 44 axle applications in select Nissan trucks and SUVs. It is designed with a LongLife sealing surface and precise dimensions to help maintain proper lubricant retention at the pinion area.

Key Features

• Part number: 18831
• Outside diameter: 3.167 in.
• Shaft diameter: 1.889 in.
• Width: 0.519 in.
• LongLife sealing surface type
• Engineered for rear differential pinion sealing
• Fits select Nissan Armada, TITAN, Xterra, Frontier, and Pathfinder models with Dana 44 axle

Detailed Description

This SKF differential pinion seal is made to specific application dimensions for a secure fit at the pinion shaft. The seal’s 1.889-inch shaft diameter, 3.167-inch outside diameter, and 0.519-inch width support proper sealing performance in the rear Dana 44 axle used on 2003-2015 Nissan Frontier, 2003-2015 Nissan Xterra, 2003-2015 Nissan Pathfinder, 2004-2015 Nissan TITAN, and 2005-2015 Nissan Armada. SKF has a long history of seal engineering and uses premium materials and controlled manufacturing methods to help keep gear oil in and contaminants out.

This part cross-references Nissan 38189-ZJ00A for the same application. Part number 18831 is a direct-fit style replacement for vehicles that require the specified rear differential pinion seal dimensions.

What It Helps Address

• Gear oil seepage at the rear differential pinion
• Contamination entering the axle housing through a worn seal
• Noise or driveline concerns caused by low lubricant level
• Seal wear from age, heat, and road exposure
• Service replacement on Dana 44 rear axle applications

Installation Notes and Tips

Verify axle type and seal dimensions before installation. Clean the pinion bore and sealing surface thoroughly, and inspect the pinion yoke for wear or grooves that can affect sealing. Proper installation depth and alignment are important for a reliable seal on Nissan Armada, TITAN, Xterra, Frontier, and Pathfinder rear Dana 44 axle applications.

Quality Assurance

SKF manufactures seals to high quality standards using application-specific designs and premium materials. The LongLife sealing surface is intended to support durable sealing performance in demanding driveline environments.