Keep transmission fluid where it belongs and hold dirt and water out with the SKF Automatic Transmission Oil Pump Seal / Manual Transmission Seal (MPN 21103). It installs as a direct-fit replacement across a wide range of vintage Chevrolet, GMC, Dodge, Chrysler and Plymouth cars and trucks, and is listed under both names because it serves automatic transmission oil pump and manual transmission sealing applications.
The seal body seats in its bore and stays stationary while the spring-loaded lip rides against the rotating shaft, retaining lubricant and blocking contaminants.
- Cold-drawn steel garter spring: loads the lip for superior fluid retention.
- Deep-drawn sheet steel case: forms a rigid, stress-resistant metal body.
- Superior protection against dirt and water.
- Silicone sealing surface measuring 2.880 in outside diameter, 2.125 in inside and shaft diameter, and 0.375 in width.
Built to specific SKF designs using premium, tested materials for correct fit. Country of origin: Mexico. Manufacturer part number 21103.
Fitment (engines: All): 1949-1951 Plymouth Deluxe, 1953-1959 Dodge Coronet, 1960-1961 Dodge Dart, 1966-1970 Chevrolet C10 Pickup, 1969-1972 Chevrolet Blazer, 1967-1972 GMC C15/C1500 Pickup, and many more Chevrolet, GMC, Dodge, Chrysler and Plymouth applications — see the Buyer's Guide tab for the full list.
This part cross-references / interchanges with the following part numbers:
10A031, 1408245, 1669724, 1738263, 2400084, 975921103, C7NN7A283C, E0NN7A283AA, CHR 21103, 2434156, 5138796, 145821103, 181252X1, A1805T410
