Keep differential lubricant in and road grime out with the Schaeffler Front Differential Pinion Seal SS2556. It is a direct-fit replacement for many vehicles, among them the 2002-2009 Chevrolet TrailBlazer, 2002-2009 GMC Envoy and 2002-2006 Chevrolet TrailBlazer EXT.
The pinion seal sits where the pinion shaft exits the front differential housing. The seal body stays stationary while its lip rides on the rotating pinion shaft. This helps hold lubricant inside the housing and keeps dirt, dust and moisture away from the internal components.
- OE expertise: Designed and produced to stringent OEM standards for assured quality.
- Durable design: Backed by a robust quality assurance process that accounts for the precise requirements of automotive systems.
- Premium materials: Chosen to keep the seal durable and effective at providing protection over time.
- Contaminant protection: Helps keep dirt, dust and moisture from damaging internal components.
Signs a pinion seal may need replacing: Look for lubricant seeping or dripping at the pinion end of the front differential, oily residue on the housing, or a low differential fluid level. Diagnose the source of the leak before replacing the seal. Consult the vehicle service information for the correct installation procedure.
See the "Vehicles it fits" section for the full vehicle list and engine details.
Interchange: 710547 · 14946 · 4132556100
Product information is for general reference and may contain errors. See our Disclaimer.
This part cross-references / interchanges with the following part numbers:
710547, 14946, 4132556100
Frequently Asked Questions
What does a front differential pinion seal do?
It seals the opening where the pinion shaft exits the front differential housing. This helps hold lubricant in and keep dirt, dust and moisture out.
Which vehicles does Schaeffler SS2556 fit?
It fits many vehicles, among them the 2002-2009 Chevrolet TrailBlazer, 2002-2009 GMC Envoy and 2002-2006 Chevrolet TrailBlazer EXT. See the "Vehicles it fits" section for the full list.
What are signs the pinion seal may need replacing?
Lubricant seeping or dripping at the pinion end of the front differential, oily residue on the housing, or a low fluid level may mean the seal needs replacing. Diagnose the source of the leak first.
What part numbers does SS2556 interchange with?
Schaeffler SS2556 interchanges with 710547, 14946 and 4132556100.
What quality standards is this seal built to?
Schaeffler designs and produces it to stringent OEM standards. It is backed by a robust quality assurance process that accounts for the precise requirements of automotive systems.
