The Case IH 3402790R2 Ring is a genuine OEM component designed for various Case IH agricultural and industrial equipment. This essential engine part ensures proper sealing and function within compatible D-series engines, including D-179, D-206, D-239, D-246, D-268, D-310, D-358, DT-239, DT-268, DT-358, D-155, D-188, D-282, D-301, D-361, D-407, DT-361, DT-407, D-414, D-436, D-466, DT-414, DT-436, DT-466, and D-166. It is crucial for maintaining engine compression and preventing oil consumption in a wide range of Case IH tractors such as the 485, 495, 585, 595, 685, 695, 785, 795, 885, 895, 995, 3220, 3230, 4210, 4230, 4240, and industrial tractors like the 248, 258, 268, 278, 288, as well as 3200 and 3210 loaders.