National 472394 Axle Spindle Seal - Front

Axle Spindle Seal for Front Driveline Service

National 472394 is an axle spindle seal built for front axle sealing applications that require a precise housing and shaft match. It uses nitrile material with Redi-Coat treatment to support reliable sealing performance in driveline and axle service.

Compatible with select Chevrolet K20, Chevrolet K20 Suburban, Ford F-250, Ford F-350, and Chevrolet K10 Suburban front axle applications, this seal is specified for Spicer 44-series axles with an 8.5-inch ring gear. The National 472394 part number is also referenced in OE-style replacement searches for front axle spindle seal service.

Key Features

• Axle spindle seal for front driveline sealing
• Nitrile construction for sealing durability
• Redi-Coat surface treatment
• Housing bore: 3.000 in. / 76.200 mm
• Outside diameter: 3.005 in. / 76.330 mm
• Shaft diameter: 1.937 in. / 49.200 mm
• Width: 0.312 in. / 7.920 mm
• Zero duplication part designation

Detailed Description

National 472394 is an oil seal used as an axle spindle seal in front axle assemblies. Its dimensions are listed for a 3.000-inch housing bore and 1.937-inch shaft, making it a dimension-specific sealing solution for service work on compatible Spicer 44-5CFHD and 44-6F/44-6CF axle applications. National has supplied sealing products for decades, and this part reflects that focus on fit, material selection, and application-specific design.

This part cross-references Dorman - HELP 47041 and FEL-PRO 60771 for the same application. Search terms such as front axle spindle seal for Ford F-250, front axle spindle seal for Ford F-350, and front axle seal for Chevrolet K20 help identify the correct application quickly.

What This Part Helps Address

• Gear oil leakage at the front axle spindle area
• Contamination entering the axle sealing surface
• Wear-related seepage around the spindle seal
• Service replacement for aging front axle seals
• Fitment-specific sealing needs on Spicer 44-series front axles

Installation Notes and Tips

Verify housing bore, shaft diameter, and seal width before installation. Confirm axle configuration and ring gear size against the vehicle application, especially on 1964-1972 Ford F-250 and Ford F-350 front axle service and 1967-1977 Chevrolet K20 or 1969-1970 Chevrolet K10 Suburban front axle applications. Clean the sealing surfaces thoroughly and inspect the spindle and hub area for wear before installing National 472394.

Quality Assurance

National states that its sealing products are backed by more than 75 years of sealing expertise and ongoing design development for modern vehicle service needs. National 472394 is a zero duplication part in the 470000 series, built to support consistent fitment and sealing performance in the specified front axle applications.