The Case IH 74490 is a genuine OEM rubber O-ring designed for various Case IH, IH, and International Harvester agricultural and industrial machinery. This durable O-ring features an internal diameter of 60 mm, an external diameter of 70 mm, and a thickness of 5 mm, ensuring a precise fit and reliable seal. It is commonly used in models such as the 485, 585, 685, 785, 885, 995 series tractors, 3210, 3220, 3230, 4210, 4220, 4230, 4240 series tractors, 510, 520, 530, 540, 550 loaders, and 248, 258, 268, 278, 288 industrial tractors.