The Case IH 47389921R is a genuine OEM remanufactured long block engine, engineered to deliver reliable and consistent performance across a broad spectrum of Case IH agricultural equipment. This unit ensures seamless compatibility and restores optimal power to your machinery. It is a direct replacement for previous part numbers 47389921 and 47389921RV, fitting various models including the Maxxum, Puma, Magnum, Optum, Steiger, Quadtrac, CVX, MXM, MXU, CS, JXU, Farmall A, Vestrum, Farmall C, Farmall U, Farmall M, Farmall N, Farmall V, Farmall JX, Farmall JXM, Farmall JXC, Farmall JXV, Farmall JXN series tractors, Axial-Flow and AFX series combines, Patriot series sprayers, and Titan series tillage equipment.