USA Standard Gear ZGK2138 10.5" Ford 4.56 Ring & Pinion Gear Set with Master Install Kit

The USA Standard Gear ZGK2138 is a complete re-gear package for Ford 10.5" rear differentials, combining a precision-engineered 4.56 ratio ring and pinion gear set with a comprehensive master install kit. This all-in-one solution is designed for 1999-2010 Ford Super Duty trucks equipped with the 10.5" Sterling rear axle, providing everything needed for a professional-grade differential rebuild or gear ratio change.

Ring & Pinion Gear Set Features:

• Manufactured to meet or exceed OEM specifications for reliable, quiet operation
• 4.56:1 gear ratio for improved towing power and off-road performance
• Fits 10.5" ring gear diameter with 31-spline pinion
• 12 ring gear bolt pattern
• Precision-engineered using advanced computer software for optimal tooth contact and durability
• Rigorous in-house quality testing ensures dimensional accuracy and proper fitment

Master Install Kit Includes:

• High-quality Koyo pinion bearings and races
• Carrier bearings and races
• Complete shim kit for precise setup
• Pinion seal and nut
• Crush sleeve for proper pinion preload
• Ring gear bolts with thread locker
• Marking compound with brush for pattern checking
• Cover gasket or RTV silicone

USA Standard Gear delivers cost-effective drivetrain solutions without compromising quality, making this package ideal for general automotive repair, off-road upgrades, and towing applications. Backed by a one-year warranty against manufacturing defects, this complete kit provides professional installers and experienced DIY enthusiasts with everything needed to complete a confident, long-lasting differential rebuild.