John Deere 4370311 Engine Speed Controller December 2, 2023 adminjohn No Comments JOHN DEERE 4370311 ENGINE CONTROLLER. 100% NEW NEVER INSTALLED. JOHN DEERE 4370311 (1) TOTAL. FITS JOHN DEERE 110 120 160LC 200LC. 230LC 330LC 370LC 450LC MANY ZAZIS. CHECK WITH DEERE LISTING. TO SEE IF WILL WORK FOR YOU.