National 493291 Wheel Seal - Front Inner or Front Outer

National 493291 Wheel Seal for Front Axles

National 493291 is a front wheel seal built for select Dodge and Plymouth applications that use a 2.283-inch shaft and 3.155-inch housing bore. It uses nitrile material with Redicoat protection to support a reliable sealing surface in demanding driveline service.

Key Features

• Wheel seal / oil seal for front inner and front outer positions where listed
• National 493291 part number for direct reference
• Nitrile sealing material for common axle and hub sealing applications
• Redicoat finish for improved sealing surface protection
• 2.283 in. shaft diameter and 3.159 in. outside diameter
• 0.375 in. width for the specified housing dimensions
• Cross-references Centric Parts 417.67003 and Continental 49495 for the same application

Detailed Description

National 493291 is a wheel seal in the 490000 series designed around precise dimensional requirements: 57.990 mm inside diameter, 80.240 mm outside diameter, 80.140 mm housing bore, and 9.530 mm width. The nitrile construction and Redicoat coating support sealing performance in wheel-end service where grease and contamination control are critical. This part number is used across multiple Dodge Ram, B-series, D-series, and Plymouth PB applications, including front inner and front outer positions on select vehicles.

Compatible With 1975-2003 Dodge Ram 2500 Van, front inner; 1999-2003 Dodge Ram 3500 Van, front inner; 1981-1994 Dodge B350, front inner; and other listed Dodge and Plymouth front axle applications. National 493291 is a practical replacement choice when servicing wheel-end leaks or restoring seal integrity on older truck and van platforms.

What This Seal Helps Address

• Wheel-end grease leakage at the hub or axle seal area
• Contamination entering the bearing or hub assembly
• Seal wear from age, heat, and road exposure
• Loss of sealing performance on front inner or front outer positions
• Service replacement for worn OE-style wheel seals on Dodge and Plymouth trucks and vans

Installation Notes and Tips

Verify shaft diameter, housing bore, and seal width before installation to confirm the seal matches the hub or axle dimensions. Clean the sealing surface and inspect the shaft or spindle for grooves, corrosion, or damage that could affect seal life. Use the exact position listed for the vehicle, since this part is specified for front inner and front outer applications depending on the model and axle configuration.

Quality Assurance

National has supplied sealing solutions for more than 75 years and continues to develop products for modern vehicle service needs. Part number 493291 reflects that sealing-focused engineering approach for driveline and axle repair.