USA Standard Gear 10738 Ring & Pinion Gear Set GM 8.5/8.6 3.73 Ratio

The USA Standard Gear 10738 is a precision-engineered ring and pinion gear set designed for GM 8.5" and 8.6" rear differentials with a 3.73:1 gear ratio. This high-quality replacement gear set is manufactured to exceed OEM specifications, making it an ideal choice for restoring performance, accommodating larger tires, or replacing worn factory gears.

Key Features:

• 8.50" ring gear diameter with 10 ring gear bolts
• 30 spline pinion shaft
• 3.73:1 gear ratio for balanced performance and fuel economy
• Fits GM 8.5" and 8.6" 10-bolt rear differentials
• Precision-machined for proper fitment and quiet operation
• Undergoes rigorous in-house quality evaluation for dimensional accuracy and material integrity

USA Standard Gear ring and pinion sets are designed to provide reliable, long-lasting performance for street, towing, and light off-road applications. Each gear set is manufactured using modern CNC processes and quality-controlled to ensure proper tooth contact patterns and durability. Professional installation with proper setup and break-in procedures is recommended for optimal performance and longevity.