3.42 Ring And Pinion Set For GM 8.5 8.625 10-Bolt Differentials, Street Friendly Upgrade, 8620 Steel Construction, Fits Chevy GMC Cadillac Buick Pontiac Oldsmobile Hummer Isuzu
✔️ 3.42 ratio, 8620 steel, direct-fit for GM 8.5/8.625 10-bolt
Upgrade your GM 8.5/8.625 10-bolt differential with this 3.42 ring and pinion set. It's designed for street and light performance use, helping improve torque delivery and acceleration on a wide range of GM vehicles, from Chevy trucks to Cadillac sedans and more (1970-2020).
✅ 3.42 gear ratio for GM 8.5/8.625 10-bolt
✅ 8620 steel construction for durability
✅ OE direct-fit for GM 8.5/8.625 10-bolt with 2.73+ carrier
✅ Fits Chevrolet, GMC, Cadillac, Buick, Pontiac and Oldsmobile models (1970-2020)
✅ 1-year/50,000-mile warranty
💡 What is a ring and pinion set used for in rear differentials? In short, it changes gear ratios to optimize torque and highway speed for street driving and performance builds. - improved torque delivery for daily driving - reduces drivetrain wear with proper carrier compatibility - easy direct-fit on GM 8.5/8.625 10-bolt setups - works across GM models from 1970-2020