Keep differential lubricant where it belongs and road grime out with the Schaeffler Differential Pinion Seal / Shaft Seal, MPN SS2934. This rear seal fits a long list of classic Ford, Lincoln, Mercury and Edsel vehicles, including the 1957-1979 Ford Thunderbird, 1959-1960 Edsel Ranger, 1965-1973 Ford Mustang, 1966-1983 Ford Bronco, 1966-1979 Lincoln Continental, 1967-1980 Mercury Marquis and 1975-1983 Ford F-150. See the "Vehicles it fits" section for the full application list and engine details.
Schaeffler catalogs this part as a shaft seal, and it is listed here as a differential pinion seal. Both names refer to this same part. The seal body stays stationary in the housing while its lip contacts the rotating pinion assembly. This helps hold lubricant in and keep dirt, dust and moisture out.
- Quality materials: Schaeffler engineers its seals with high-quality materials intended to meet vehicle manufacturer specifications, and works with suppliers to meet Schaeffler's own quality standards.
- Durable design: The seal is backed by a robust quality assurance process that accounts for the precise requirements of automotive systems.
- OE expertise: The seal is designed and built to stringent OEM standards for assured quality.
- Contamination protection: The seal is designed to keep dirt, dust and moisture away from the components it guards.
Signs this seal may need replacing include lubricant seepage or drips at the front of the rear differential where the driveshaft connects, or a dropping differential fluid level. If a worn pinion seal is the source of the leak, this seal replaces it. Diagnose the cause before ordering, because related components may also need attention.
Interchange: 18833 · 4132934100
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Frequently Asked Questions
What does the Schaeffler SS2934 seal do?
It seals around the rotating pinion at the rear differential. This helps hold lubricant inside the housing and keep dirt, dust and moisture out.
Why is it called both a differential pinion seal and a shaft seal?
Schaeffler catalogs SS2934 as a shaft seal, and it is listed here as a differential pinion seal. Both names describe this same part.
Which vehicles does the SS2934 fit?
It fits many classic Ford, Lincoln, Mercury and Edsel models, such as the 1965-1973 Ford Mustang and the 1966-1983 Ford Bronco. See the "Vehicles it fits" section for the full list.
What are signs a differential pinion seal may need replacing?
Common signs include lubricant seepage or drips where the driveshaft meets the rear differential, and a low differential fluid level. Diagnose the source of the leak before replacing the seal.
What part numbers does the SS2934 interchange with?
The Schaeffler SS2934 interchanges with part numbers 18833 and 4132934100.
