National 493291 Wheel Seal - Front Inner or Front Outer

National 493291 Wheel Seal Overview

The National 493291 wheel seal is engineered for reliable driveline protection in Dodge and Plymouth vehicles. Designed to maintain optimal sealing performance, this oil seal supports smooth axle operation and prevents lubricant leakage in various truck and van models.

• Inside diameter: 2.283 inches (57.990 mm)
• Outside diameter: 3.159 inches (80.240 mm)
• Width: 0.375 inches (9.530 mm)
• Material: Durable nitrile compound
• Redicoat coating for enhanced corrosion resistance
• Compatible with Dodge and Plymouth trucks and vans

Technical Specifications and Material Details

This wheel seal from National is part of the 490000 series and features a 49-type design optimized for axle shaft sealing. The nitrile material offers resistance to oil, grease, and other automotive fluids, ensuring long-lasting durability. The Redicoat finish provides additional protection against rust and corrosion, extending the service life of the seal in demanding environments. With precise dimensions including a 3.155-inch (80.140 mm) housing bore, this seal fits securely to maintain a tight barrier between the axle shaft and housing.

Compatible Dodge and Plymouth Models

The National 493291 wheel seal is compatible with a range of Dodge and Plymouth vehicles, including B150, B250, B300, B350, B2500, B3500, D200, D250, D300, D350, PB150, PB250, PB350, Ram 2500 Van, Ram 3500 Van, and Ramcharger models. This ensures proper fitment and reliable sealing performance for these specific trucks and vans.

Common Applications and Problem Solving

• Prevents axle lubricant leaks that can cause driveline damage
• Protects wheel bearings from contamination by dirt and moisture
• Maintains proper pressure and sealing in axle assemblies
• Reduces wear on axle shafts by providing a secure seal
• Helps avoid costly repairs related to seal failure and axle damage

Installation Notes and Tips

When installing the National 493291 wheel seal, ensure the housing bore and shaft surfaces are clean and free of debris. Use appropriate tools to press the seal evenly into the housing bore without damaging the sealing lip. Verify the seal orientation matches the original installation to maintain proper oil retention. Lubricate the seal lip lightly with clean axle grease before installation to reduce initial wear.

Quality Assurance and Warranty

National wheel seals are manufactured to meet industry standards for durability and performance. The 493291 part number undergoes rigorous quality control to ensure dimensional accuracy and material integrity. This product includes a limited warranty against defects in materials and workmanship, providing confidence in its reliability for Dodge and Plymouth driveline applications.