The CATERPILLAR 126-8347 Final Drive Wheel is a robust and high-performance component designed for heavy-duty mining applications. Built to deliver reliable torque and durability, this genuine CAT part fits a range of Caterpillar Off-Highway Trucks, including the 776D-5ER, 776D-AFS, 777D-3PR, 777D-AGC, 777D-AGY, 777E-KDP, and 777D-FKR models. The 126-8347 final drive wheel ensures optimal power transmission and supports heavy load-bearing demands in extreme mining and earthmoving environments. Whether you’re maintaining a fleet or conducting critical repairs, this final drive component helps restore OEM-level functionality and efficiency.