National 8121S Wheel Seal - Front Inner

National 8121S Wheel Seal Overview

The National 8121S wheel seal is engineered for reliable driveline protection in Chrysler and Dodge vehicles. Designed to maintain optimal sealing performance, this oil seal supports smooth operation and prevents contamination in wheel assemblies.

• Inside diameter: 1.730 inches (43.940 mm)
• Outside diameter: 2.340 inches (59.440 mm)
• Housing bore: 2.336 inches (59.330 mm)
• Width: 0.470 inches (11.940 mm)
• Material: durable polyacrylate
• Series: 8000
• Type: 25

Detailed Product Description

The National 8121S wheel seal is constructed from polyacrylate, a material known for its resistance to heat, oil, and wear, making it suitable for demanding automotive environments. With an inside diameter of 1.730 inches and an outside diameter of 2.340 inches, this seal fits precisely within the housing bore of 2.336 inches, ensuring a tight and secure fit. The 0.470-inch width provides adequate sealing surface to prevent oil leaks and contamination. This oil seal is part of National's 8000 series, designed specifically for driveline and axle applications requiring reliable sealing under various operating conditions.

Compatible Vehicles and Applications

This wheel seal is compatible with a range of Chrysler and Dodge models, including the Chrysler 300, Dodge Challenger, Charger, Dart, Monaco, Newport, New Yorker, and Town & Country. The National 8121S is ideal for use in wheel hubs and axle assemblies where maintaining oil integrity is critical for vehicle performance and longevity.

• Prevents oil leaks in wheel hubs and axle assemblies
• Protects driveline components from dirt and debris
• Reduces wear on shafts and bearings
• Maintains proper lubrication within the axle system
• Helps avoid costly driveline repairs due to seal failure

Installation Notes and Tips

When installing the National 8121S wheel seal, ensure the housing bore and shaft surfaces are clean and free of debris. Use appropriate tools to press the seal evenly into place without damaging the sealing lip. Verify the seal orientation matches the vehicle manufacturer’s specifications to maintain proper sealing function. Lubricate the seal lip lightly with clean oil before installation to reduce initial wear.

Quality Assurance and Warranty

National wheel seals are manufactured to meet strict quality standards for durability and performance. The 8121S part number undergoes rigorous testing to ensure compatibility and reliability in Chrysler and Dodge driveline applications. While specific warranty details may vary, National typically offers coverage against manufacturing defects to provide confidence in product longevity.