ACDelco 89059644 Transfer Case Synchronizer Blocking Ring

The ACDelco 89059644 is a genuine GM transfer case four-wheel drive synchronizer blocking ring designed for smooth and reliable shift mode operation. This OE-quality component is engineered to ensure proper synchronization during transfer case gear engagement, reducing grinding and wear while improving shift quality.

Key Features:

• Genuine GM Original Equipment (OE) part for guaranteed fit and function
• Designed and tested to rigorous GM engineering standards
• Ensures smooth transfer case shift mode synchronization
• Reduces gear wear and prevents grinding during engagement
• Direct replacement for worn or damaged blocking rings
• Backed by GM quality and ACDelco reliability

This synchronizer blocking ring is a critical component in transfer case operation, maintaining proper gear timing and protecting internal components from excessive wear. Ideal for restoration, repair, or preventive maintenance on GM vehicles equipped with compatible transfer cases.