The Case IH 1988712C2 Extension is an original equipment manufacturer (OEM) part designed for a wide range of Case IH agricultural machinery. This extension ensures proper function and fitment across various models, including Axial-Flow combines (1620, 1640, 1644, 1660, 1666, 1680, 1688, 2144, 2166, 2188, 2344, 2366, 2388, 2577, 2588, 5088, 6088, 7088, 7120, 7230, 7240, 7250, 8010, 8120, 8230, 8240, 8250, 9120, 9230, 9240, 9250), cotton pickers (1800, 1822, 1844, 2044, 2055, 2144, 2155, 2555), forage harvesters (771, 781, 881, 8810, 8910, 900, 910, 920, 930), and windrowers (8820, 8830, 8840, 8850, 8860, 8870, 8880, 8880HP, 8880S). This part has been superseded by OEM part numbers 87402636 and 87698544, indicating its replacement in newer catalogs.