Help keep transfer case fluid in and dirt and water out with the SKF Transfer Case Input Shaft Seal / Output Shaft Seal, part number 18771. It is a direct-fit replacement for the listed applications, including the 1982-2014 Ford F-150, 1984-1990 Jeep Cherokee, 1986-1993 Dodge Ramcharger, 1988-1997 Chevrolet K1500 and 2003-2012 GMC Sierra 1500. See the Buyer's Guide tab for the full list and engine details.
This seal is listed under both names, transfer case input shaft seal and transfer case output shaft seal. It is cataloged for front, rear and rear forward positions depending on the application. The seal body stays stationary in the case while its sealing lip rides on the rotating shaft.
SKF introduced the first integrated shaft seal in 1928. It builds its seals to specific designs with premium materials chosen for the application and its operating environment.
Signs this part may need replacing include fluid seepage or drips at the transfer case input or output shaft and a low transfer case fluid level. Confirm the source of the leak before replacing the seal.
Interchange: CHR 18771
CHR18771 · 8983502798 · 4412990 · 4505469 · 83505290 · 975918771 · F77Z7B215AA · 15580381 · 7118647 · 145818647 · 145818771 · 16149 · 16623 · 48213
This part cross-references / interchanges with the following part numbers:
Is SKF 18771 an input shaft seal or an output shaft seal?
It is listed under both names, transfer case input shaft seal and transfer case output shaft seal. It is cataloged for front, rear and rear forward positions depending on the application.
What vehicles does SKF 18771 fit?
The listed applications include the 1982-2014 Ford F-150, 1984-1990 Jeep Cherokee, 1988-1997 Chevrolet K1500 and 2003-2012 GMC Sierra 1500. See the Buyer's Guide tab for the full list.
What are signs a transfer case shaft seal may need replacing?
Fluid seepage or drips around the transfer case input or output shaft and a low transfer case fluid level can indicate a worn seal. Diagnose the leak source before replacing the seal.
How is SKF 18771 constructed?
Its body is deep-drawn sheet steel that forms a rigid, stress-resistant metal case. Its garter spring uses cold-drawn steel wire to help retain fluid.
What part numbers does SKF 18771 interchange with?
It interchanges with numbers including CHR 18771, F77Z7B215AA, 15580381, 4412990 and 16149. See the Interchange line in the description for the complete list.
WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
