USA Standard Gear ZGK2166 Ring & Pinion Gear Set with Master Install Kit for Dana 80

The USA Standard Gear ZGK2166 is a complete gear package designed for Dana 80 rear differentials with an 11.25" ring gear diameter. This comprehensive kit combines a 3.73 ratio ring and pinion gear set with a master installation kit and a 35-spline positraction limited-slip differential unit, providing everything needed for a professional differential rebuild.

Key Components:

• Ring and pinion gear set with 3.73:1 ratio for Dana 80 axles
• Complete master install kit with bearings, seals, shims, and hardware
• 35-spline positraction (posi) limited-slip differential with 4.125" bore
• Designed for "thin" Dana 80 gear case configuration
• Precision-manufactured gears for optimal strength and quiet operation

This all-in-one package eliminates the need to source individual components separately, ensuring compatibility between all parts. The 3.73 gear ratio provides an excellent balance between acceleration and highway cruising efficiency, making it ideal for towing applications and heavy-duty trucks. USA Standard Gear products are engineered to meet or exceed OEM specifications for reliable performance and durability.