Help keep lubricant inside the axle and road grime out with the SKF differential pinion seal, part number 18891. It is cataloged for both front and rear positions. It fits a long run of trucks, vans and cars, including the 1954-1997 Ford F-250, 1961-1972 Chevrolet K10 Pickup, 1984-1987 Dodge Ramcharger, 1985-1996 Chevrolet Corvette, 1987 Dodge Dakota and 1999-2008 Ford F-350 Super Duty. See the "Vehicles it fits" section for the full list of applications and engine details.
This seal is listed as both a differential pinion seal and a drive axle shaft seal. Its body stays stationary while its sealing lip rides on the rotating shaft. It holds lubricant in and helps block dirt and water.
- Rigid metal case: The body is formed from deep drawn sheet steel for a rigid, stress-resistant case.
- Garter springs: They use cold drawn steel wire for superior fluid retention.
- Contaminant protection: It is built for superior protection against dirt and water.
- Tested for fit: It is manufactured with a high-quality, tested design and materials for correct fit.
SKF invented the first integrated shaft seal in 1928. The company has kept pioneering new seal designs and bonding techniques since then. Each seal is made to a specific design using premium materials selected for its application and operating environment.
Signs this seal may need replacing include lubricant seeping around the shaft where it leaves the housing, a wet or grimy housing, and a dropping lubricant level. Diagnose the leak source before replacing.
Interchange: 38427-2
6B3904 · 6V5380 · 4112001 · E0TZ4676A · 14079089 · 15583783 · 3979615 · 462864 · AAU3381 · RTC1010 · 348839C91 · 384428C91 · 35725 · 38427 · 382472
This part cross-references / interchanges with the following part numbers:
6B3904, 6V5380, 4112001, E0TZ4676A, 14079089, 15583783, 3979615, 462864, AAU3381, RTC1010, 348839C91, 384428C91, 35725, 38427, 38427-2
Frequently Asked Questions
What does a differential pinion seal do?
It seals the point where the rotating shaft exits the differential, holding lubricant in and helping keep dirt and water out. Its lip rides on the shaft while the metal case stays stationary.
Does SKF 18891 fit front and rear positions?
It is cataloged for both front and rear positions on the listed applications. Check the "Vehicles it fits" section for your exact year, make and model.
What is the SKF 18891 seal case made of?
The body uses deep drawn sheet steel for a rigid, stress-resistant metal case. The garter springs use cold drawn steel wire for fluid retention.
What are signs a pinion seal may need replacing?
Look for lubricant seeping around the shaft where it leaves the housing, a wet or dirty housing, or a low lubricant level. Diagnose the leak source first, because other seals or gaskets can also leak.
Which vehicles does SKF 18891 fit?
Applications include the 1954-1997 Ford F-250, 1985-1996 Chevrolet Corvette and 1999-2008 Ford F-350 Super Duty, among many others. See the "Vehicles it fits" section for the full list.
