National 472572 Manual Transmission Output Shaft Seal

Manual Transmission Output Shaft Seal for Borg-Warner T10

National 472572 is a manual transmission output shaft seal built for select Borg-Warner T10 applications. It uses nitrile sealing material and Redicoat treatment to help maintain a reliable seal at the transmission output shaft, where fluid control is critical.

Designed around a 1.875 in. shaft diameter, 2.754 in. outside diameter, and 0.312 in. width, this oil seal is a direct-fit option for many Chevrolet Corvette, Camaro, and Pontiac Firebird manual transmission applications. National 472572 is also listed as a zero duplication part for cleaner catalog matching.

Key Features

• Manual transmission output shaft seal for select Borg-Warner T10 transmissions
• Nitrile construction for sealing performance in transmission service
• Redicoat finish for improved sealing surface characteristics
• Inside diameter: 1.875 in. (47.630 mm)
• Outside diameter: 2.754 in. (69.950 mm)
• Width: 0.312 in. (7.920 mm)
• Housing bore: 2.750 in. (69.850 mm)
• Oil seal part description in National Series 470000

Detailed Description

National 472572 is engineered as a transmission sealing component for manual gearboxes that use a 32-spline Borg-Warner T10 family output shaft. It is listed for Chevrolet Corvette, Chevrolet Camaro, Pontiac Firebird, Pontiac Grand Am, Pontiac Grand LeMans, Pontiac LeMans, Chevrolet Malibu, and Chevrolet Monte Carlo applications across the 1974-1988 model years, depending on transmission variant and design. If you are servicing a Chevrolet Corvette or Camaro with a Borg-Warner T10S, T10W, T10Y, or T10CC transmission, this seal matches the specified shaft and housing dimensions.

This part cross-references Gates 18657 and Dorman - HELP 47026 for the same application. National has supplied sealing solutions for more than 75 years, and this part reflects that focus on dimensional accuracy and transmission sealing performance.

What It Helps Address

• Transmission fluid seepage at the output shaft
• Oil leakage around the rear of the manual transmission
• Seal wear from age, heat, and mileage
• Loss of sealing integrity during transmission service
• Fitment issues when replacing a worn Borg-Warner T10 output shaft seal

Installation Notes and Tips

Verify the transmission code, spline count, shaft diameter, and seal dimensions before installation. This seal is specified for 32-spline Borg-Warner T10 applications, including T10S, T10W, T10Y, T10Z, and T10CC variants shown in the fitment data. Inspect the housing bore and shaft surface for wear, scoring, or contamination before installing the new seal.

For best results, clean the sealing area thoroughly and confirm the seal orientation matches the transmission design. Use the listed dimensions—1.875 in. shaft, 2.754 in. outside diameter, and 0.312 in. width—to confirm the correct replacement for your Chevrolet Corvette, Camaro, or Pontiac Firebird application.

Quality Assurance

National is a long-established sealing brand with more than 75 years in the industry, and this part is backed by that manufacturing experience. The 472572 output shaft seal is built to the stated dimensions and material specification for consistent service in manual transmission applications.

• Fits 1980-1981 Chevrolet Corvette, N/A
• Fits 1984 Chevrolet Corvette, N/A, 1st Design and 2nd Design with Borg-Warner T10CC Transmission
• Fits 1985-1988 Chevrolet Corvette, N/A
• Fits 1974-1979 Chevrolet Corvette, N/A with Borg-Warner T10S Transmission
• Fits 1974-1979 Chevrolet Corvette, N/A with Borg-Warner T10W Transmission
• Fits 1979 Chevrolet Corvette, N/A with Borg-Warner T10Y Transmission
• Fits 1980-1982 Chevrolet Camaro, N/A
• Fits 1974-1979 Chevrolet Camaro, N/A with Borg-Warner T10S Transmission
• Fits 1974-1979 Chevrolet Camaro, N/A with Borg-Warner T10W Transmission
• Fits 1981 Chevrolet Malibu, N/A
• Fits 1981 Chevrolet Monte Carlo, N/A
• Fits 1981-1982 Pontiac Firebird, N/A
• Fits 1974-1979 Pontiac Firebird, N/A with Borg-Warner T10S Transmission
• Fits 1974-1979 Pontiac Firebird, N/A with Borg-Warner T10W Transmission
• Fits 1979 Pontiac Firebird, N/A with Borg-Warner T10Y Transmission
• Fits 1979 Pontiac Firebird, N/A with Borg-Warner T10Z Transmission
• Fits 1974-1975 Pontiac Grand Am, N/A with Borg-Warner T10S Transmission
• Fits 1974-1975 Pontiac Grand Am, N/A with Borg-Warner T10W Transmission
• Fits 1979 Pontiac Grand Am, N/A with Borg-Warner T10Z Transmission
• Fits 1979 Pontiac Grand LeMans, N/A with Borg-Warner T10Z Transmission
• Fits 1979 Pontiac LeMans, N/A with Borg-Warner T10Z Transmission