National 8935S Manual Transmission Output Shaft Seal

Overview of National 8935S Manual Transmission Output Shaft Seal

The National 8935S is a precision-engineered manual transmission output shaft seal designed for Chrysler and Dodge vehicles. This oil seal ensures reliable sealing performance to prevent leaks and maintain transmission integrity in models such as the Dodge Charger, Challenger, and Chrysler 300.

• Inside diameter: 1.558 inches (39.570 mm)
• Outside diameter: 2.254 inches (57.250 mm)
• Flanged outside diameter: 2.515 inches (63.880 mm)
• Thickness: 0.437 inches (11.099 mm)
• Sealing material: durable nitrile rubber
• Compatible with housing bore diameter of 2.250 inches (57.150 mm)
• Part number: 8935S

Technical Details and Material Specifications

The National 8935S output shaft seal is constructed from nitrile, a synthetic rubber known for its resistance to oil, heat, and wear. The seal features a flanged outside diameter of 2.515 inches, providing a secure fit within the transmission housing bore of 2.250 inches. With an inside diameter of 1.558 inches, it is designed to fit the output shaft precisely, minimizing the risk of fluid leakage. The overall width, including the side lip, measures 1.520 inches, ensuring proper sealing coverage and durability under operating conditions.

Compatible Vehicles and Applications

This manual transmission output shaft seal is compatible with a range of Chrysler and Dodge models, including but not limited to:

• Chrysler 300
• Dodge Challenger
• Dodge Charger
• Dodge Dart
• Chrysler Imperial
• Chrysler Monaco
• Chrysler Newport
• Chrysler Town & Country

Use the National 8935S seal to maintain transmission fluid containment and prevent contamination in these vehicles’ manual transmissions.

Common Issues Addressed by the National 8935S Seal

• Prevents manual transmission fluid leaks from the output shaft area
• Reduces risk of transmission damage due to fluid contamination
• Eliminates noise and vibration caused by worn or damaged seals
• Maintains proper lubrication within the transmission system
• Helps avoid costly repairs related to seal failure

Installation Notes and Tips

• Ensure the transmission housing bore is clean and free of debris before installation
• Use appropriate tools to press the seal evenly into place without distortion
• Verify the shaft diameter matches the 1.558-inch inside diameter of the seal for proper fit
• Inspect the sealing surface for wear or damage prior to installation
• Lubricate the seal lip with transmission fluid to ease installation and prevent damage

Quality Assurance and Warranty Information

The National 8935S manual transmission output shaft seal is manufactured to meet industry standards for durability and performance. Made from high-quality nitrile material, it offers resistance to oil and heat degradation. While specific warranty details may vary, National typically provides coverage against manufacturing defects to ensure customer confidence in the product’s reliability.