Keep transfer case lubricant sealed in and road grime out with the SKF Transfer Case Extension Housing Seal / Output Shaft Seal, part number 18860. It installs at the rear outer position and is a direct-fit replacement for the listed applications, including the 1987-1999 Ford F-250, 1991-1999 Chevrolet K1500, 1994-2001 Dodge Dakota, 2007-2013 Chevrolet Avalanche and 2015-2023 GMC Canyon.
This seal is listed under both the transfer case extension housing seal and output shaft seal names, within the Auto Trans Seal category. The seal body stays stationary in the housing while its lip contacts the rotating output shaft.
- Dirt and water protection: designed to guard against dirt and water getting in.
- Rigid metal case: the body is formed from deep-drawn sheet steel for a rigid, stress-resistant case.
- Steel garter spring: made from cold-drawn steel wire to help the lip retain fluid.
- Correct fit: built with a tested design and materials selected for proper fit.
SKF invented the first integrated shaft seal in 1928 and has kept developing new seal designs and bonding techniques since then. Each seal is made to a specific design, using premium materials chosen for its application and operating environment. SKF seals are built to the company's quality standards.
Signs this seal may need replacing include lubricant seeping or dripping at the rear of the transfer case and a dropping fluid level. If a worn seal is causing the leak, this part replaces it, so diagnose the source of the leak before ordering. See the Buyer's Guide tab for all 174 applications and engine details.
Interchange: 4333N · 1661856 · 4746258 · 4132938100 · 15661460 · 24207336 · 24233898 · 24240280 · 8677463 · 27SS2938 · 61018A
This part cross-references / interchanges with the following part numbers:
4333N, 1661856, 4746258, 4132938100, 15661460, 24207336, 24233898, 24240280, 8677463, 27SS2938, 61018A
