The Case-IH 134399A1 is a genuine OEM gasket specifically designed for the PTO clutch housing. This critical sealing component ensures proper function and prevents leaks in a wide range of Case-IH agricultural machinery. It is compatible with MX series (MX100, MX110, MX120, MX135, MX150, MX170), 71 series (7110, 7120, 7130, 7140, 7150), 72 series (7210, 7220, 7230, 7240, 7250), and 89 series (8910, 8920, 8930, 8940, 8950) tractors. It also fits 21 series (2144, 2166, 2188), 23 series (2344, 2366, 2388), and 25 series (2577, 2588) combines, as well as 20 series (2055), 21 series (2155), and 25 series (2555) cotton pickers, providing a reliable and durable seal.