National 3459 Manual Transmission Output Shaft Seal - Front or Right

Reliable Manual Transmission Output Shaft Seal for Acura and Dodge Vehicles

The National 3459 Manual Transmission Output Shaft Seal is engineered to provide durable sealing performance for a range of vehicles including Acura Accord, Dodge Caravan, and Volkswagen models. Designed with precision dimensions and high-quality polyacrylate material, this seal helps maintain transmission integrity and prevent fluid leaks.

• Inside diameter options: 1.575 inch (40 mm)
• Outside diameter: 2.289 inch (58.14 mm)
• Flanged outside diameter: 2.520 inch (64 mm)
• Thickness: 0.354 inch (9 mm)
• Sealing material: Polyacrylate with bi-directional lip design
• Redicoat surface treatment for enhanced durability
• Compatible with housing bore diameter of 2.283 inch (58 mm)

Technical Details and Material Specifications

The National 3459 output shaft seal is constructed from polyacrylate, a material known for its resistance to heat, oil, and wear. The bi-directional lip design ensures effective sealing against fluid leakage in both rotational directions, which is critical for manual transmission applications. The seal’s flanged outside diameter of 2.520 inches (64 mm) provides a secure fit within the transmission housing bore of 2.283 inches (58 mm). Additionally, the Redicoat coating enhances the seal’s surface to resist corrosion and extend service life.

Compatible Vehicles and Applications

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

• Acura Accord (various years)
• Dodge Caravan and Grand Caravan
• Volkswagen models such as the Routan
• Chrysler Town & Country and Sebring
• Honda and Mitsubishi manual transmission vehicles

Part number 3459 is designed specifically for manual transmission output shafts requiring a 1.575 inch (40 mm) shaft diameter and fits housing bores around 2.283 inches (58 mm).

Common Issues Addressed by the National 3459 Seal

• Prevents transmission fluid leaks from the output shaft area
• Reduces contamination ingress into the transmission system
• Minimizes wear on transmission components by maintaining proper lubrication
• Helps avoid costly transmission repairs due to seal failure
• Maintains consistent transmission performance and reliability

Installation Notes and Tips

Ensure the transmission output shaft and housing bore are clean and free of debris before installation. Use appropriate tools to press the seal evenly into the housing bore without damaging the sealing lip. Verify the seal orientation matches the bi-directional lip design for optimal sealing. Lubricate the seal lip lightly with transmission fluid prior to installation to reduce initial wear. Check for proper fitment with the specific vehicle model to avoid leaks or premature failure.

Quality Assurance and Warranty Information

National’s 3459 output shaft seal is manufactured to meet industry standards for durability and performance. The polyacrylate material and Redicoat treatment contribute to long service life under normal operating conditions. While specific warranty terms may vary, National typically offers coverage against manufacturing defects. Always consult product documentation or the vehicle manufacturer’s guidelines for warranty details.