The Case IH 3059797R91 is a genuine OEM piston ring designed for optimal engine performance and longevity in a wide range of Case IH agricultural and utility tractors. This essential engine component ensures proper compression and oil control. It has been superseded by part number 3136422R91 and is compatible with models including the 585, 685, 785, 885, 995, 3220, 3230, 4210, 4230, 4240, CX series, JX series, MXC series, and VJ series.