American Axle & Manufacturing (OEM) ring and pinion sets are uniquely designed to match the requirements the OEM Ring & Pinion designated for your specific vehicle. All performance factors for the size and weight of the specific vehicle must be taken into account. Only original equipment quality components are guaranteed to meet the same specifications as the parts they replace. AAM components mean performance to the vehicle manufacturer's standards. The combination of materials, heat treating, and cut geometry allow for a gear set that has ten times the life of a non-OEM ring and pinion gear set. The TracRite GT is a helical gear designed limited slip style differential. The torque bias is proportional to the throttle, providing a smooth application of torque to the wheels. Since this differential uses helical gears, there are no clutch plates to wear and no friction additives are needed. The TracRite GT is compatible with ABS, traction and stability control systems. When you want your vehicle to perform like the OEM it is, use the OEM replacement parts made by the original manufacture. *Recommended Oil: Standard 80/90wt (Non-Synthetic). Premium master install kit uses only the highest quality components including Koyo brand bearings. Included are carrier bearings and races, pinion bearings and races, pinion seal, complete shim kit, ring gear bolts, pinion nut, crush collar (if applicable), threadlock, marking compound, brush, and gasket or RTV silicone.