SKF 10640 Manual Transmission Seal - Front

Manual Transmission Seal Overview

SKF manual transmission seal 10640 is built for applications that need reliable sealing at the shaft interface. It uses a LongLife sealing surface type and premium materials to help keep lubricant in and contaminants out.

Compatible with select Mazda and Isuzu manual transmission applications, this seal is a direct-fit style replacement for vehicles that match the listed dimensions and fitment. The SKF 10640 is engineered for consistent sealing performance in demanding drivetrain environments.

Key Features

• LongLife sealing surface type for durable sealing performance.
• Premium material construction matched to the application environment.
• Designed to retain lubricant and block outside contamination.
• Fits shaft diameter 1.063 in. with 1.697 in. outside diameter.
• SKF part number 10640 for easy identification and ordering.

Detailed Description

SKF 10640 is a manual transmission seal developed for specific drivetrain sealing requirements. With a width of 0.315 in., an outside diameter of 1.697 in., and a shaft diameter of 1.063 in., it is sized for applications that require precise sealing at the transmission shaft. SKF’s seal design heritage includes decades of development in shaft sealing technology, and this part reflects that focus on material selection and application-specific construction. This part cross-references Febi-Bilstein 34788 for the same application.

Fits 1982-1984 Mazda B2200, Front. Fits 1987-1993 Mazda B2200, Front. Fits 1979-1984 Mazda B2000, Front. Fits 1986-1987 Mazda B2000, Front. Fits 1983-1992 Mazda 626, N/A. Fits 1988-1992 Mazda MX-6, N/A. Fits 1991 Isuzu Amigo, Front. Fits 1992-1993 Isuzu Amigo, Front.

What It Helps Address

• Transmission fluid seepage at the shaft seal area.
• Contamination entering the manual transmission housing.
• Wear-related sealing loss from an aging seal surface.
• Incorrect seal sizing during drivetrain service.

Installation Notes and Tips

Verify shaft diameter, outside diameter, and width before installation to confirm the seal matches the application. Inspect the sealing surface for scoring or wear, and clean the bore and shaft area before fitting the new seal. Use the listed fitment notes, including the 1991 Isuzu Amigo from 5/91, to confirm the correct application.

Quality Assurance

SKF has a long history in seal engineering and manufactures sealing products to specific designs using premium materials. The 10640 is produced to support long service life and dependable sealing performance in manual transmission applications.