The Case IH A77774 Piston and Sleeve Kit is a genuine OEM repair component designed for various Case IH and International Harvester agricultural machinery. This comprehensive kit features a piston with a 4.375-inch (111.125 mm) bore, a 1.625-inch (41.275 mm) pin diameter, and a 6-ring piston configuration, ensuring reliable engine performance and a precise fit. It is suitable for a wide range of tractor models, including the 1086, 1486, 1586, 3388, 3588, 3788, 4166, 4186, 4366, 4386, 4568, 4586, 4786, 7488, 7788, 886, 986, HYDRO 186, and HYDRO 86.