National 224040 Manual Transmission Output Shaft Seal - Right

Overview of National 224040 Manual Transmission Output Shaft Seal

The National 224040 manual transmission output shaft seal is engineered to provide reliable sealing performance for select Audi, Bentley, Volkswagen, and Volvo models. Designed with precision nitrile material, this oil seal helps maintain transmission integrity by preventing fluid leaks and contamination.

• Inside diameter: 1.575 inches (40.000 mm)
• Outside diameter: 2.370 inches (60.200 mm)
• Thickness/width: 0.394 inches (10.000 mm)
• Sealing material: durable nitrile for resistance to oil and heat
• Compatible with housing bore size: 2.362 inches (60.000 mm)
• Part number: 224040, series 220000

Technical Details and Material Specifications

This manual transmission output shaft seal from National is constructed from nitrile, a synthetic rubber known for its excellent resistance to petroleum-based oils and high temperatures. The seal features a 1.575-inch (40 mm) inside diameter and a 2.370-inch (60.2 mm) outside diameter, with a thickness of 0.394 inches (10 mm). These dimensions ensure a precise fit within the transmission housing bore of 2.362 inches (60 mm), providing an effective barrier against oil leaks and external contaminants.

Compatible Vehicles and Applications

The National 224040 output shaft seal is compatible with a range of manual transmission vehicles, including Audi models such as A4 Quattro, A5 Quattro, A6 Quattro, A8 Quattro, S4, S5, S6, and S8; Bentley Continental; Volkswagen models including Golf, Jetta, Passat, Phaeton, Corrado, and Golf City; as well as Volvo models like C30, C70, S40, S60, S70, V50, and V70. This part is designed specifically for manual transmission output shafts requiring a 1.575-inch shaft diameter and fits housing bores around 2.362 inches.

Common Issues Addressed by the Output Shaft Seal

• Prevents transmission fluid leaks that can cause low fluid levels and damage
• Protects transmission internals from dirt and debris contamination
• Reduces risk of premature wear on output shaft bearings and gears
• Maintains proper lubrication within the manual transmission system
• Helps avoid costly transmission repairs due to seal failure

Installation Notes and Tips

When installing the National 224040 output shaft seal, ensure the transmission housing bore is clean and free of debris. Use appropriate tools to press the seal evenly into place without damaging the nitrile material. Verify the shaft diameter matches the 1.575-inch specification for proper sealing. It is recommended to inspect related transmission components during installation to ensure overall system integrity.

Quality Assurance and Warranty

National manufactures the 224040 output shaft seal to meet industry standards for durability and performance. The nitrile material offers reliable resistance to oil and heat exposure common in manual transmissions. While specific warranty details may vary, National products typically come with a limited warranty against manufacturing defects, ensuring confidence in the part’s quality and longevity.