National 5121 Wheel Seal - Front Inner

Overview of National 5121 Wheel Seal for Chrysler, Dodge, Plymouth

The National 5121 wheel seal is engineered to provide reliable sealing performance for a range of Chrysler, Dodge, and Plymouth vehicles. Designed with precision dimensions and durable nitrile material, this oil seal helps maintain driveline integrity and prevent leaks in your vehicle's axle assembly.

• Inside diameter: 1.940 inches (49.280 mm)
• Outside diameter: 2.626 inches (66.700 mm)
• Overall width with side lip: 0.580 inches (14.730 mm)
• Width: 0.255 inches (6.477 mm)
• Material: Nitrile rubber for resistance to oil and wear
• Type: 281 series oil seal
• Housing bore: 2.622 inches (66.600 mm)

Detailed Product Description

The National 5121 wheel seal is part of the 5000 series and is constructed from nitrile, a synthetic rubber known for its excellent resistance to petroleum-based oils and high temperatures. This seal features a precise inside diameter of 1.940 inches to fit shafts accurately, while the outside diameter of 2.626 inches ensures a secure fit within the housing bore of 2.622 inches. The overall width with side lip measures 0.580 inches, providing an effective barrier against contaminants and fluid leakage. This oil seal is designed specifically for driveline and axle applications, maintaining the integrity of the wheel hub assembly in various Chrysler, Dodge, and Plymouth models.

Compatible Vehicles and Applications

This wheel seal is compatible with multiple Chrysler, Dodge, and Plymouth vehicles, including but not limited to:

• Chrysler Aspen, Fifth Avenue, Imperial, LeBaron, Magnum, Monaco, Newport, New Yorker, Town & Country
• Dodge B100, B150, B200, B250, B300, B350, Challenger, Charger, D100, D150, D200, D250, D350, Dart, Ramcharger
• Plymouth models such as PB150, PB250, PB350

Using the National 5121 wheel seal ensures proper sealing performance tailored to these specific makes and models, helping to maintain driveline efficiency and prevent axle oil leaks.

Common Issues Addressed by National 5121 Wheel Seal

• Prevents oil leaks from axle and wheel hub assemblies
• Protects against dirt and debris contamination
• Reduces premature wear of axle components
• Maintains proper lubrication within the driveline system
• Helps avoid costly repairs due to seal failure

Installation Notes and Tips

• Ensure the shaft and housing bore are clean and free of debris before installation
• Use appropriate tools to press the seal evenly into the housing bore to avoid damage
• Verify the seal orientation matches the original part for correct oil retention
• Check shaft surface for wear or damage that could affect seal performance
• Lubricate the seal lip lightly with clean oil prior to installation

Quality Assurance and Warranty

National wheel seals are manufactured to meet industry standards for durability and performance. The 5121 oil seal is made from high-quality nitrile material to withstand exposure to oil and heat in automotive driveline applications. While specific warranty terms may vary, National products typically come with a limited warranty against defects in material and workmanship, ensuring confidence in the product's reliability.