The Case-IH 1978894C1 is a genuine OEM speed sensor designed for various Case-IH Magnum and MX series agricultural tractors. This critical component ensures precise speed measurement, vital for optimal machine performance and operational safety. It is a direct replacement part, guaranteeing compatibility and reliable functionality for models including 7110, 7120, 7130, 7140, 7150, 7210, 7220, 7230, 7240, 7250, MX100, MX110, MX120, MX135, MX150, and MX170.