The Case-IH 719411021 Diaphragm Kit is an authentic OEM replacement part designed for various Case-IH JX and Quantum series agricultural tractors. This kit ensures proper functionality of the diaphragm system, crucial for optimal tractor performance and reliability. It is compatible with models such as JX100U, JX1070U, JX1080U, JX1090U, JX1100U, JX55, JX60, JX65, JX70, JX75, JX80, JX85, JX90, JX95, JX70U, JX80U, JX90U, JX95U, QUANTUM 65C, QUANTUM 75C, QUANTUM 85C, QUANTUM 95C, QUANTUM 65V, QUANTUM 75V, QUANTUM 85V, QUANTUM 95V, QUANTUM 65F, QUANTUM 75F, QUANTUM 85F, QUANTUM 95F, VJ60, VJ70, and VJ80. Refer to your machine's parts catalog for specific application details.