USA Standard Gear ZGK2109 Master Overhaul Kit for AAM Differential - 11.5 Rear

The USA Standard Gear ZGK2109 is a comprehensive master overhaul kit designed specifically for 11.5-inch American Axle Manufacturing (AAM) rear differentials. This complete kit provides everything needed for a professional-quality ring and pinion installation, ensuring proper setup and long-lasting performance.

Kit Includes:

• Premium pinion bearings with 4.125-inch outer diameter
• Carrier bearings and races
• Pinion seal to prevent fluid leaks
• Complete shim kit for precise pinion depth and carrier bearing preload adjustment
• Pinion nut for proper pinion bearing preload
• Crush sleeve or solid spacer (application dependent)
• Ring gear bolts
• Marking compound for gear pattern verification
• Thread locker

Key Features:

• Designed for 11.5-inch AAM rear axles with 3.73 and up gear ratios
• Compatible with positraction/limited slip differentials
• Precision-manufactured bearings for smooth operation and extended life
• Eliminates multiple part orders with all-in-one convenience
• Meets or exceeds OEM specifications

This master overhaul kit is ideal for complete differential rebuilds, ring and pinion gear changes, or bearing replacement on GM and Dodge trucks equipped with the 11.5-inch AAM rear axle. USA Standard Gear is known for producing quality drivetrain components that professional installers and enthusiasts trust for reliable performance.