SKF 7440 Manual Transmission Shift Shaft Seal

SKF 7440 Manual Transmission Shift Shaft Seal

The SKF 7440 manual transmission shift shaft seal is built for applications that need a precise seal at the shift shaft to help retain transmission lubricant and keep out road contaminants. With a nitrile sealing surface and dimensions matched to the application, it supports dependable sealing performance in older manual transmissions across Dodge, Ford, Chevrolet, GMC, Chrysler, and Mercury vehicles.

Key Features

• Part number: SKF 7440
• Manual transmission shift shaft seal for transmission sealing systems
• Nitrile sealing surface for oil-resistant sealing performance
• Outside diameter: 1.254 in.
• Shaft diameter: 0.750 in.
• Width: 0.250 in.
• Engineered to help keep lubricants in and contaminants out

Detailed Description

SKF has a long history in seal design, and the 7440 reflects that experience with a seal made to specific dimensions and premium material selection for the application. This manual transmission shift shaft seal is designed for vehicles using older manual gearbox and transfer case configurations, including New Process 445, Rockwell Standard, Spicer 24, and related setups. If you are servicing a Dodge D250 or W250, a Ford F-250, or a Chevrolet Blazer with the correct transmission configuration, SKF 7440 provides the sealing profile needed for the shift shaft area. This part cross-references 04513 and 018542X for the same application.

What It Helps Address

• Transmission fluid seepage at the shift shaft
• Contamination entering the manual transmission housing
• Wear-related sealing loss around the shaft interface
• Service issues on older manual transmission and transfer case assemblies
• Leak concerns during drivetrain maintenance or rebuild work

Installation Notes and Tips

Verify shaft diameter, outside diameter, and seal width before installation to confirm the correct fit. Inspect the shaft surface for scoring, corrosion, or burrs that could affect sealing performance. Clean the bore and shaft area thoroughly, and install the seal squarely to avoid distortion. Confirm the transmission or transfer case configuration listed in the fitment data before ordering, especially on vehicles with Rockwell Standard, Spicer 24, or New Process 445 notes.

Quality Assurance

SKF manufactures seals to defined specifications using materials selected for the operating environment. The 7440 is produced to support long service life and consistent sealing performance in manual transmission applications.

Compatible Vehicles

• Fits 1981 Dodge D250, N/A, New Process 445 Trans.
• Fits 1981 Dodge W250, N/A, New Process 445 Trans.
• Fits 1975-1980 Dodge D200, N/A, New Process 445 Trans.
• Fits 1975-1980 Dodge W200, N/A, New Process 445 Trans.
• Fits 1969-1972 Chevrolet Blazer, N/A, Rockwell Std.
• Fits 1967-1972 Chevrolet K10 Suburban, N/A, Rockwell Std.
• Fits 1967-1972 Chevrolet K20 Suburban, N/A, Fitment: Rockwell Standard T221, Power Take Off (PTO) Reverse Idler Bearing
• Fits 1959-1972 Ford F-250, N/A, Spicer 24
• Fits 1970-1972 GMC Jimmy, N/A, Rockwell Std.
• Fits 1959-1965 Ford F-100, N/A, Spicer 24
• Fits 1959-1961 Mercury Colony Park, N/A
• Fits 1954-1960 Ford F-250, N/A
• Fits 1954-1960 Ford F-350, N/A
• Fits 1955-1959 Ford Thunderbird, N/A
• Fits 1955-1957 Chrysler Imperial, N/A
• Fits 1949-1954 Chrysler Imperial, N/A, Single Rotor Type