National 4160 Wheel Seal - Front Inner

National 4160 Wheel Seal for Ford Front Inner Applications

National 4160 is a front inner wheel seal built for select Ford trucks and vans that need a precise sealing fit at the hub. With nitrile construction and OE-style dimensions, it helps maintain a clean seal where the shaft and housing meet.

Use this seal for Ford F-250 Super Duty, Ford F-350 Super Duty, and Ford Econoline front inner applications where the listed dimensions and position match.

Key Features

• Part number 4160 wheel seal from National
• Nitrile sealing material for dependable fluid resistance
• Inside diameter: 2.420 in. / 61.470 mm
• Outside diameter: 3.005 in. / 76.330 mm
• Housing bore: 3.000 in. / 76.200 mm
• Overall width with side lip: 0.389 in. / 9.881 mm
• Width: 0.270 in. / 6.858 mm
• Front inner position
• National Series 4000, Type 281

Detailed Description

National 4160 is an oil seal/wheel seal designed around the dimensional requirements of the application, including a 2.420-inch shaft diameter and 3.005-inch outside diameter. The nitrile sealing element is selected for sealing performance in driveline and axle service, while the 3.000-inch housing bore specification helps support proper fitment in the hub assembly. National has supplied sealing products for decades and continues to engineer solutions for modern vehicle service needs.

This part cross-references Four Seasons 24017 for the same application. It is also listed with AMS Automotive 4160.

What It Helps Address

• Gear oil or grease leakage at the front hub
• Contamination entering the wheel-end sealing area
• Seal wear from age, heat, and road exposure
• Loss of sealing integrity during wheel bearing service
• Fitment issues when replacing a worn front inner seal on Ford trucks and vans

Installation Notes and Tips

Confirm shaft diameter, housing bore, and width before installation. Clean the hub bore and sealing surface thoroughly, and inspect the spindle or shaft for scoring, rust, or wear that could affect seal life. Verify front inner placement and match the application notes for the exact Ford model and year, including the 2001 cutoff notes on select Econoline applications.

Compatible With 1999-2007 Ford F-250 Super Duty, front inner; 1999-2007 Ford F-350 Super Duty, front inner; 1999-2006 Ford Econoline, front inner; 2000-2005 Ford Excursion, front inner; and additional Ford front inner applications listed in the fitment data. National 4160 is also a direct reference point for service work on Ford F-250 and Ford Econoline front inner wheel seal replacements.

Quality Assurance

National is a long-established sealing brand with more than 75 years in the industry, and its product development is focused on current vehicle service requirements. The 4160 is built to published dimensional specifications for accurate replacement selection.