The Case-IH 87303089 is an authentic OEM knob designed for a wide range of Case-IH agricultural and construction equipment, including Farmall, Maxxum, Puma, Steiger, Magnum, Optum, Vestrum tractors, Axial-Flow combines, Cotton Express pickers, FR series forage harvesters, Patriot sprayers, WD series windrowers, L series loaders, and Farmlift telehandlers. This genuine replacement part ensures proper fit and function for critical controls.