John Deere Original Equipment Coolant Heater - AR42883,1 Fits the following Tractor Models: 3010 (-049,999), 4000 (201,000-), 4020, 4010, 4520, 5020, 700A Fits the following Excavator Models: 690A, 690 Fits the following Four-Wheel Drive Loader Models: 644A Made in the USA. Licensed John Deere OEM Product.