The Case IH 81863771 Control Unit is a genuine OEM replacement part engineered for various Case IH JXU, JX, and Quantum series tractors. This essential electronic control unit ensures proper system function and compatibility with specified models including JX100U, JX1070U, JX1080U, JX1090U, JX1100U, JX70U, JX80U, JX90U, JXU105, JXU115, JXU75, JXU85, JXU95, QUANTUM 100, QUANTUM 70, QUANTUM 80, QUANTUM 90, QUANTUM 100N, QUANTUM 70N, QUANTUM 80N, QUANTUM 90N, QUANTUM 100V, QUANTUM 70V, QUANTUM 80V, and QUANTUM 90V.