Product Overview This variable displacement axial piston hydraulic pump is designed for CAT D8R, D8R II, D8N, and D8GC track-type tractors. It delivers reliable hydraulic power for blade lifting, tilting, steering, and all working hydraulic circuits. Part Number 9T-8346 Interchange Part Number 0R-8503 Pump Type Variable Displacement Axial Piston Hydraulic Pump Compatible Machines CAT D8R, D8R II, D8N, D8GC Track-Type Tractors Applications Blade lifting, tilting, steering, and