National Drivetrain GM 8.5 Inch 3.73 Ratio Ring & Pinion Gear Set + Master Bearing Kit

Looking to change your gear ratio for better towing or acceleration? This National Drivetrain Platinum Torque kit has everything you need. It's a matched 3.73 ratio ring and pinion gear set made from durable 8620 steel, designed for GM Corporate 8.5-inch (also called 8.625-inch) 10-bolt rear differentials (1970-1998) and front differentials (1977-1991). This is a complete MASTER installation kit, meaning it doesn't just include the gears. You also get all the bearings and races (pinion and side), a new pinion seal and nut, ring gear bolts, a cover gasket, shims, pattern checking compound, and thread locker. This is essential for a proper, professional-grade installation. Perfect for replacing worn gears or upgrading from a higher (numerical) ratio like a 2.73. Whether you're a seasoned mechanic or a dedicated DIYer with the right tools, this kit provides quality components to rebuild your differential correctly. Get ready to transform your vehicle's performance with this reliable, complete gear set solution from a trusted name in drivetrain parts.