The McCormick E550039013 is a genuine OEM starter contactor designed for a wide range of McCormick agricultural tractors. This essential electrical component ensures reliable starting performance across C, CX, MC, MTX, T-MAX, X60, X70, XTX, and ZTX series models, including specific variants like C80, CX110, MC135, MTX200, T-MAX 120, X60.50, X70.80, XTX215, and ZTX280. It functions as a solenoid, engaging the starter motor to crank the engine. Ensure optimal electrical system operation with this authentic McCormick replacement part.