Upgrade your tractor's performance with the high-quality Cummins 4BT Main Bearing Set 3.9L 3802010 STD. Designed for excellence, this aftermarket bearing set is compatible with Cummins models 4BT, 4BT, and 3.9L engines. Featuring the OEM part numbers 3802010, J802010, 4955855, and 84282776, you can rely on these bearings for outstanding durability and reliability. Each package includes one complete set of main bearings, ensuring your tractor operates smoothly. Trust Tractor, the leading supplier and distributor of tractor and skid steer parts, for top-notch components that keep your machinery running efficiently.