3.73 7.5in 10 Bolt GM

The Richmond 3.73 7.5in 10 Bolt GM ring and pinion kit is a precision final drive assembly engineered for GM 10-bolt differentials. This 3.73 ratio gearset delivers an optimal balance between acceleration response and highway cruising efficiency, making it ideal for modern off-road platforms and performance vehicles.

Richmond is known for manufacturing tight-tolerance ring and pinion sets that maintain gear mesh integrity across thousands of operating hours. The 3.73 ratio provides a moderate numerator that helps preserve fuel economy on highways while delivering significant torque multiplication off-line, which is crucial for vehicles with larger tires, towing loads, or operating in low-grip terrain.

This complete kit weighs 12.75 lbs and includes matched ring and pinion gears sized specifically for the 7.5-inch differential carrier, which is common in GM 10-bolt platforms used in full-size trucks and SUVs. Buyers performing differential service, rebuild, or upgrade work on GM vehicles will find this gearset to be a foundational component for a properly functioning final drive.