Eaton Posi - GM 8.2 BOP

The Eaton Posi - GM 8.2 BOP differential carrier is a high-performance limited-slip differential designed for GM 10-bolt rear axle assemblies commonly found in full-size trucks, SUVs, and performance vehicles from the 1970s forward. This 28-spline unit serves drivers who demand improved traction and handling over open differentials, particularly in off-road conditions, towing applications, or spirited driving where wheel slip and torque loss are concerns. The 3.36 ratio specification makes this carrier suitable for stock and lightly modified powertrains seeking a balance between acceleration and highway cruising efficiency.

Built from premium steel for durability and longevity, the Eaton Posi mechanism uses a helical gear design that automatically distributes torque between the two drive wheels during cornering or acceleration, reducing inside-wheel slip without the harshness of full lockers. The 28-spline shaft interface ensures solid engagement with OEM axle shafts, while the carrier's compact footprint fits within the 8.2-inch GM 10-bolt housing without modification. Weighing 20.47 lbs, the unit integrates seamlessly into existing rear assemblies, and its steel construction provides excellent heat dissipation and shock resistance under sustained load—critical for both highway and off-pavement use.

This carrier is ideal for truck owners, off-road enthusiasts, and mechanics rebuilding or upgrading GM 10-bolt rear ends seeking superior traction without the cost or complexity of electronic locking systems. Installation requires rear axle disassembly and is best performed by experienced technicians or shops with differential service capability. Compatibility is limited to GM vehicles equipped with 8.2-inch 10-bolt differentials; verify your vehicle's axle type and shaft spline count before ordering. The Eaton Posi represents a proven, maintenance-free upgrade that delivers noticeable improvements in traction and handling longevity.