The Case IH 81803420 is a genuine OEM bearing cup designed for various Case IH agricultural and construction machinery. This robust component features an outside diameter of 158.75 mm and a width of 15.88 mm, ensuring precise fitment and reliable performance in demanding applications. It is a critical part for maintaining the smooth operation of axles and other rotating assemblies in compatible tractors, combines, cotton pickers, forage harvesters, and windrowers.