National 442380 Wheel Seal - Front Inner

National 442380 Wheel Seal for Front Inner Applications

National 442380 is a wheel seal built for front inner driveline service on a wide range of classic Jeep, Ford, Chevrolet, GMC, and Dodge 4WD applications. It uses nitrile material and precise inch-based dimensions to support a proper seal at the shaft and housing bore.

National has supplied sealing solutions for more than 75 years, and this 442380 oil seal reflects that focus on dimensional accuracy and vehicle-specific fitment. It is a direct-fit option for front inner service on vehicles such as the Ford Bronco, Ford F-100, and Jeep Cherokee.

Key Features

• Part number: National 442380
• Wheel seal / oil seal for driveline and axle sealing systems
• Nitrile construction for sealing performance
• Inside diameter: 2.500 in. / 63.500 mm
• Outside diameter: 3.256 in. / 82.700 mm
• Housing bore: 3.251 in. / 82.580 mm
• Width: 0.312 in. / 7.920 mm
• Series 440000, Type 44

Detailed Description

National 442380 is engineered as a front inner wheel seal for applications that require a 2.500-inch shaft and a 3.256-inch outside diameter. The nitrile sealing material is selected for dependable contact at the shaft and housing interface, helping maintain the axle seal area in service. This part number is commonly referenced for older 4WD trucks and SUVs, including Ford Bronco, Ford F-250, and Chevrolet Blazer fitments.

This part cross-references SKF 24904 and 34611 for the same application. National 442380 also aligns with multiple interchange references used in axle and wheel seal service, making it a practical replacement when matching dimensions and vehicle fitment are confirmed.

What It Helps Address

• Gear oil seepage at the front inner wheel seal area
• Contamination entering the axle housing through a worn seal
• Seal wear from age, heat, and mileage
• Loss of sealing integrity around the shaft and housing bore
• Maintenance needs on classic 4WD front axle assemblies

Installation Notes and Tips

• Verify shaft diameter, housing bore, and width before installation.
• Inspect the axle shaft and seal bore for scoring, corrosion, or wear.
• Clean the sealing surface thoroughly so the new seal seats evenly.
• Use the confirmed vehicle fitment and axle configuration, including Spicer 44-8F and Spicer 44-F notes where listed.
• Fits 1966-1968 Ford Bronco, Front Inner.
• Fits 1969 Ford Bronco, Front Inner, 1st Design; with 0.312 (in) Width; 3.256 (in) Outside Diameter.
• Fits 1959-1967 Ford F-100, Front Inner, with 4WD.
• Fits 1964-1965 Ford F-250, Front Inner, with 4WD; with Spicer 44-F Axle.
• Fits 1957-1963 Ford F-250, Front Inner, with 4WD.
• Fits 1959 Ford F-350, Front Inner, with 4WD.
• Fits 1969-1972 Chevrolet Blazer, Front Inner, with 4WD.
• Fits 1967-1972 Chevrolet K10 Suburban, Front Inner.
• Fits 1970-1972 GMC Jimmy, Front Inner, with 4WD.
• Fits 1974-1977 Jeep Cherokee, Front Inner, with Spicer 44-8F Axle.
• Fits 1974-1977 Jeep J10, Front Inner.
• Fits 1977 Jeep Wagoneer, Front Inner, with Spicer 44-8F Axle.
• Fits 1974-1976 Jeep Cherokee, Front Inner.
• Fits 1974-1976 Jeep Wagoneer, Front Inner.
• Fits 1974 Dodge Ramcharger, Front Inner, with 4WD.

Quality Assurance

National is a long-established sealing brand with more than 75 years of experience in sealing technology. The 442380 wheel seal is built to the listed dimensions and material specification for consistent service in confirmed front inner applications.