Drop In 3.73 Ratio Ring And Pinion Gear Set For GM 8.5 8.6 10 Bolt Differential With 30 Spline Pinion Expert Rebuild Replacement For Enhanced Acceleration And Towing

3.73 Ring & Pinion Set for GM 8.5/8.6 10-Bolt Differential Kit
✔️ Drop-in 3.73 ratio, 30-spline pinion, GM 8.5/8.6 10-Bolt diff, 1 kit

This drop-in ring and pinion gear set is designed to replace worn gears in GM 8.5/8.6 10-bolt differentials. It’s a handy upgrade to improve acceleration, towing, and overall drivetrain response after repairs or performance upgrades.

✅ 3.73 gear ratio
✅ 30-spline pinion
✅ Replacement part GM8.5-373
✅ Includes bearings, seats, seals, and small parts rated for high temperature
✅ Professional installation recommended

💡 What is a ring and pinion set used for in a GM rear differential?

This handy upgrade improves acceleration, towing, and overall drive feel. - Improves torque transfer and take-off performance with the right gear ratio - Fits GM 8.5/8.6 10-bolt differentials and a 30-spline pinion - Includes sealed bearings and seals for durable service - Requires precise backlash adjustment and setup for best results