USA Standard Gear ZGK2233 GM 8.875" 12-Bolt Truck 3.73 Ratio Ring & Pinion Gear Kit with Posi and Install Kit

The USA Standard Gear ZGK2233 is a complete differential upgrade package designed for GM 8.875" 12-bolt truck rear axles. This comprehensive kit includes everything needed to re-gear your differential in one convenient part number, saving time and eliminating the hassle of sourcing components separately.

Complete Package Includes:

• 3.73 ratio ring and pinion gear set engineered for optimal performance and durability
• 30-spline limited-slip positraction (posi) differential for improved traction
• Master install kit with high-quality bearings and all necessary installation components
• Axle bearings and seals for complete rear-end service

Key Features:

• Designed specifically for GM 8.875" 12-bolt truck applications (will not fit passenger car 12-bolt)
• 12-tooth pinion gear configuration for strength and reliability
• USA Standard ring and pinion sets are manufactured to exacting tolerances for quiet operation
• Master install kit includes premium bearings and all required small parts
• Limited-slip differential provides enhanced traction for improved launch and control

This kit is ideal for vehicles requiring re-gearing due to larger tires, performance upgrades, or towing applications. The 3.73 ratio provides an excellent balance of acceleration and highway cruising efficiency. USA Standard Gear products are precision-machined and rigorously tested to meet or exceed OEM specifications, ensuring reliable performance for street, towing, and light off-road use.

Application Note: The GM 8.875" 12-bolt truck differential has carrier breaks at 2.73 / 2.76-3.42 / 3.73 ratios. This kit includes components compatible with 3.73 and higher ratio carriers. Professional installation and proper gear setup are recommended for optimal performance and longevity.