A4191R John Deere Ventilator Pump Rotor For A, AR, AO, B, 50, 60, 70, 520, 620, 720

John Deere Ventilator Pump Rotor. It Is Not Broken Or Scored Up. It Is Part Number A4191R. For A Serial Number 692121 And Up To The End, AR Serial Number 280056 And Up To The End, AO Serial Number 280056 And Up To The End, B Serial Number 300867 And Up To The End, 50, 60, 70, 520, 620, 720, 530, 630, 730