The McCormick 123086A1 Cylinder Block is a genuine OEM engine component designed for McCormick CX series agricultural tractors. This critical part forms the core structure of the engine, housing the cylinders and supporting various engine systems. It ensures proper engine function and durability across compatible models including CX70, CX75, CX80, CX85, CX90, CX95, CX100, CX105, CX110, and CX115. This part number is also compatible with Case IH CX series tractors.