The John Deere AR90840 is a genuine OEM resistor specifically designed for precise control of the blower motor speed in various John Deere agricultural and construction equipment. This essential electrical component ensures optimal performance of the HVAC system by regulating current flow to the blower motor, providing reliable cabin climate control. Manufactured to John Deere's rigorous standards, the AR90840 resistor offers durability and direct fitment for a wide range of John Deere tractors, combines, cotton pickers, forage harvesters, loaders, motor graders, skidders, sprayers, wheeled excavators, and windrowers.