Help keep transfer case lubricant sealed in and road grime out with the SKF Transfer Case Input Shaft Seal / Output Shaft Seal, part number 17348A. It is a direct-fit replacement for many vehicles, among them the 2003-2006 Chevrolet Silverado 1500, 2003-2006 GMC Sierra 1500 and 2003-2005 Chevrolet Tahoe. SKF catalogs this seal for the front position and lists it under both the input shaft seal and output shaft seal names.
- Rigid metal case: The body is formed from deep drawn sheet steel, which gives the seal a rigid, stress-resistant case.
- Garter spring: The garter spring is made from cold drawn steel wire for superior fluid retention.
- Dirt and water protection: The seal is designed to give superior protection against dirt and water.
- Tested for correct fit: SKF builds it with a high-quality, tested design and materials for correct fit.
The seal body stays stationary in the housing while its sealing lip rides on the rotating shaft. This helps hold lubricant inside the transfer case. SKF invented the first integrated shaft seal in 1928 and has led seal design and development ever since, pioneering new designs and bonding techniques. Its seals are made to specific designs using premium materials chosen for both the application and its operating environment.
Signs this seal may need replacing: fluid seeping or dripping around the transfer case shaft, a wet or oily housing, or a low transfer case fluid level. Leaks can come from other sources, so confirm where the fluid is coming from before replacing parts.
See the "Vehicles it fits" section for the full list and engine details.
Interchange: OS-Q521C
710682 · 88984501 · 4733749500 · OSQ521C
Product information is for general reference and may contain errors. See our Disclaimer.
This part cross-references / interchanges with the following part numbers:
710682, 88984501, 4733749500, OS-Q521C, 17348A
Frequently Asked Questions
What does the SKF 17348A seal do?
It seals the transfer case shaft opening. The metal case stays fixed while the sealing lip rides on the rotating shaft, which helps keep lubricant in and dirt and water out.
Why is it listed as both an input and an output shaft seal?
SKF lists 17348A under both the Transfer Case Input Shaft Seal and Transfer Case Output Shaft Seal part types. It is cataloged for the front position on the listed applications.
Which vehicles does it fit?
It fits many vehicles, among them the 2003-2006 Chevrolet Silverado 1500, 2003-2006 GMC Sierra 1500 and 2003-2005 Chevrolet Tahoe. See the "Vehicles it fits" section for the full list.
What is the seal made of?
SKF forms the case from deep drawn sheet steel. The garter spring is made from cold drawn steel wire for fluid retention.
What are signs this seal may need replacing?
Signs include fluid seeping around the transfer case shaft, an oily housing, or a low transfer case fluid level. Other components can leak too, so confirm the leak source before replacing the seal.
