National 471264 Automatic Transmission Manual Shaft Seal

Automatic Transmission Manual Shaft Seal

National 471264 is an automatic transmission manual shaft seal for Chrysler A323 transmission applications. It uses nitrile sealing material and Redicoat surface treatment to help maintain a tight seal at the shaft interface.

Compatible with a wide range of classic Chrysler, Dodge, Plymouth, DeSoto, Fargo, and Facel Vega vehicles, this seal is specified for applications using the Chrysler A323 transmission. The 471264 part number is also referenced across multiple aftermarket catalogs for the same application.

Key Features

• Nitrile sealing material for fluid resistance in transmission service.
• Redicoat finish for improved sealing surface characteristics.
• Zero-duplication part designation for application-specific coverage.
• Dimensions: 0.625 in shaft ID, 1.254 in outside diameter, 0.250 in thickness.
• National 471264 is part of the 470000 series oil seal family.

Detailed Description

This National transmission seal is built for Chrysler A323-equipped vehicles and is listed across many fitments from 1953 through 1963. Applications include Plymouth Belvedere, Dodge Coronet, and Chrysler New Yorker models, along with several trucks and commercial vehicles that use the same transmission family. The 471264 seal is engineered to match the specified shaft and housing dimensions for proper sealing performance in the transmission case.

National has supplied sealing products for more than 75 years, and this part reflects that focus on transmission sealing solutions. This part cross-references Dorman - First Stop 46349 and SKF 6916 for the same application.

What It Is Used For

• Stopping transmission fluid seepage at the manual shaft area.
• Replacing a worn or hardened shaft seal.
• Addressing leaks caused by age-related seal shrinkage.
• Restoring sealing integrity after transmission service.
• Maintaining proper fluid retention in Chrysler A323 applications.

Installation Notes and Tips

Verify the transmission code and seal dimensions before installation. Clean the housing bore and shaft surface thoroughly, and inspect for wear, scoring, or corrosion that could affect sealing. Confirm the application notes for Chrysler A323 transmissions, including versions listed with 2-speed manual transmission output shaft seal requirements.

Quality Assurance

National backs this seal with more than 75 years of sealing product development and application coverage. The 471264 part number is supported by National's ongoing engineering focus for current and legacy vehicle service needs.