Yukon Gear & Axle ZG GM12P-373-4 Ring and Pinion Gear Set 3.73 Ratio GM 12-Bolt

The Yukon Gear & Axle ZG GM12P-373-4 is a high-performance ring and pinion gear set engineered specifically for GM 12-bolt passenger car differentials with a 3.73:1 gear ratio. This USA Standard gear set delivers the ideal balance of acceleration and fuel economy for street-driven vehicles, making it a popular choice for muscle cars, classic Chevys, and performance builds.

Key Features:

• 3.73:1 gear ratio provides improved acceleration while maintaining reasonable highway cruising RPM
• Precision-manufactured using advanced CNC gear cutting technology for quiet operation
• Heat-treated alloy steel construction for maximum strength and durability
• Designed for GM 12-bolt passenger car rear ends (not truck 12-bolt)
• Engineered with proper tooth contact patterns for easier installation and setup
• Backed by a one-year manufacturer warranty

USA Standard gear sets are manufactured to meet or exceed OEM specifications, ensuring reliable performance for daily drivers and weekend warriors alike. The thin gear set design is optimized for the GM 12-bolt car housing configuration, providing a direct replacement for worn factory gears or a performance upgrade for ratio changes.