National 223020 Differential Pinion Seal - Rear or Rear Outer

National 223020 Differential Pinion Seal

National 223020 is a metric differential pinion seal built for driveline sealing applications where the pinion shaft passes through the housing. It uses nitrile sealing material and precise dimensions to help maintain a tight seal in compatible rear axle and transmission applications, including select Volvo, Jeep, Dodge, Mercedes-Benz, Porsche, BMW, Chevrolet, GMC, and Isuzu vehicles.

Key Features

• Part number 223020 differential pinion seal from National
• Nitrile sealing material for dependable oil sealing performance
• Metric dimensions: 30.000 mm shaft / 47.250 mm outside diameter / 7.000 mm width
• Housing bore: 47.000 mm; inside diameter: 30.000 mm
• Oil seal design for driveline and axle sealing systems
• National 223020 cross-references SKF 11809 and Victor Reinz 81-33636-00 for the same application

Detailed Description

National 223020 is an oil seal designed for differential pinion sealing in metric applications. The seal measures 1.181 inches (30.000 mm) on the shaft side, 1.860 inches (47.250 mm) on the outside diameter, and 0.276 inches (7.000 mm) in width, with a 1.850-inch (47.000 mm) housing bore. Its nitrile construction is suited to sealing driveline components where oil retention and contamination control are critical. This part number 223020 is used across a wide range of vehicles, including rear applications on Volvo S40, Volvo S80, Volvo V40, Volvo XC90, and Volvo 960, as well as select Jeep Liberty and Dodge Sprinter models.

National has supplied sealing solutions for more than 75 years and continues to develop designs for modern vehicle service needs. If you are servicing a rear differential pinion seal on a Volvo S80, a Jeep Liberty, or a Dodge Sprinter 2500, this seal provides the dimensional match needed for the listed applications.

What It Helps Fix

• Gear oil leaking from the differential pinion area
• Oil seepage around the pinion shaft seal surface
• Contamination entering the driveline sealing area
• Seal wear caused by age, heat, or mileage
• Loss of fluid retention in rear axle or driveline assemblies

Installation Notes and Tips

Verify shaft diameter, housing bore, and seal width before installation. Clean the sealing surface and inspect the pinion yoke or shaft for grooves, corrosion, or damage that could affect sealing. Confirm the vehicle application and position carefully, especially on rear differential service for Volvo S40, Volvo S80, and Volvo XC90 models. For Jeep TJ applications, note the listed New Process 1500 transmission note before ordering.

Quality Assurance

National is a long-established sealing brand with a history of producing premium sealing components for automotive service. The 223020 is built to the listed metric dimensions and material specification for consistent fit in confirmed applications.