National 9912 Wheel Seal - Rear, Rear Inner or Rear Outer

National 9912 Wheel Seal for Rear Axles

National 9912 is a rear wheel seal built for driveline and axle sealing applications where correct dimensions and material choice matter. It uses nitrile construction and an expanded outside diameter to help maintain a secure seal in the housing bore.

With a 1.875 inch shaft diameter, 2.865 inch outside diameter, and 0.470 inch width, this seal is sized for specific rear axle applications across Jeep, Ford, Volvo, Honda, Isuzu, and Cadillac vehicles. National 9912 is a direct-fit style oil seal for service work that requires accurate sealing dimensions.

• Part number: 9912
• Type 25 oil seal design
• Nitrile sealing material
• 1.875 in. shaft / inside diameter
• 2.865 in. expanded outside diameter
• 0.470 in. width
• Housing bore: 2.877 in.
• Fits rear, rear outer, and rear inner positions depending on application

Detailed Product Information

National 9912 is part of the 9000 series and is engineered as a rear axle oil seal for vehicles that require a 47.630 mm shaft diameter and 72.770 mm outside diameter. The expanded O.D. helps the seal seat properly in the housing bore, while the nitrile material is selected for sealing performance in driveline environments. This seal is used in applications such as Jeep Wrangler rear axle service, Jeep Cherokee rear outer service, and Ford F-150 rear axle service, along with additional fitments across Volvo, Honda, Isuzu, and Cadillac models. If you are sourcing a National 9912 wheel seal for a rear axle repair, dimensional accuracy is the key specification to verify.

This part cross-references Timken 9912S for the same application.

Common Uses

• Rear axle oil leakage at the wheel end
• Contamination entering the axle housing
• Grease or gear oil seepage around the seal area
• Service replacement for worn or hardened axle seals
• Repair work on Jeep Wrangler, Jeep Cherokee, and Ford F-150 rear axle assemblies

Installation Notes and Tips

Confirm shaft diameter, housing bore, and seal width before installation. Match the position exactly as listed for the vehicle, since this part is used in rear, rear outer, and rear inner locations depending on the application. Inspect the axle shaft and housing surface for wear, scoring, or corrosion before installing the new seal. Clean the bore thoroughly so the expanded outside diameter can seat evenly.

Quality Assurance

National has supplied sealing solutions for more than 75 years and continues to develop sealing components for modern vehicle service needs. National 9912 reflects that focus with application-specific dimensions and a nitrile sealing design for driveline use.

Vehicle Fitment

• Fits 2007-2022 Jeep Wrangler, rear
• Fits 2018 Jeep Wrangler JK, rear
• Fits 1997-2006 Jeep TJ, rear, Fits with Spicer 44-1 Heavy Duty Axle
• Fits 1997-2006 Jeep Wrangler, rear, Fits with Spicer 44-1 Heavy Duty Axle
• Fits 1994-1995 Jeep Wrangler, rear, Fits with Spicer 44-1 Heavy Duty Axle
• Fits 2002-2004 Isuzu Axiom, rear
• Fits 1998-2004 Isuzu Rodeo, rear
• Fits 2001-2003 Isuzu Rodeo Sport, rear
• Fits 1998-2002 Honda Passport, rear
• Fits 1998-2000 Isuzu Amigo, rear
• Fits 1994-1997 Honda Passport, rear, with Spicer 44 Axle
• Fits 1993-1997 Isuzu Rodeo, rear, with Spicer 44 Axle
• Fits 1991-1995 Volvo 940, rear outer
• Fits 1992-1994 Volvo 960, rear outer
• Fits 1993 Jeep Grand Wagoneer, rear outer
• Fits 1984-1985 Jeep Grand Wagoneer, rear outer
• Fits 1990-1993 Volvo 240, rear outer
• Fits 1986-1992 Jeep Comanche, rear outer, Fits with Spicer 44-1 Heavy Duty Axle
• Fits 1986-1992 Volvo 740, rear outer
• Fits 1986-1991 Jeep Grand Wagoneer, rear outer, Fits with Spicer 44-1 Heavy Duty Axle
• Fits 1984-1990 Jeep Wagoneer, rear outer, Fits with Spicer 44-1 Heavy Duty Axle
• Fits 1967-1973 Jeep Wagoneer, rear outer, Fits with Spicer 44-1 Heavy Duty Axle
• Fits 1984-1989 Jeep Cherokee, rear outer, Fits with Spicer 44-1 Heavy Duty Axle
• Fits 1974-1988 Jeep J10, rear outer
• Fits 1983-1987 Volvo 760, rear outer
• Fits 1987 Volvo 780, rear outer
• Fits 1984 Volvo DL, rear outer
• Fits 1984 Volvo GLE, rear outer
• Fits 1976-1983 Ford F-100, rear, with Spicer 44 Axle
• Fits 1980-1983 Ford F-150, rear
• Fits 1974-1983 Jeep Cherokee, rear inner
• Fits 1974-1983 Jeep Wagoneer, rear inner
• Fits 1976-1979 Ford F-150, rear, with Spicer 44 Axle
• Fits 1970-1976 Cadillac DeVille, rear
• Fits 1970-1976 Cadillac Fleetwood, rear
• Fits 1975 Ford F-100, rear, 2nd Design; with 0.47 (in) Width; with Spicer 44 Axle; 2.865 (in) Outside Diameter
• Fits 1975 Ford F-150, rear, 2nd Design; with 0.47 (in) Width; with Spicer 44 Axle; 2.865 (in) Outside Diameter
• Fits 1966-1975 Jeep CJ5, rear outer
• Fits 1963-1966 Jeep Wagoneer, rear outer