Control Unit 9109825 for John Deere 490E Excavator Engine. NOTE: Please send us your exact model number for programing. Part Name: Engine Controller. Part Number: 9138454, AT202578. For John Deere 490E Excavator. UPS Surepost usually takes 1-6 workdays. UPS GROUND usually takes 1-5 workdays. All these transport timeliness Don’t apply to remote districts. 14 days evaluation and investigation takes after receiving your return item. Your satisfaction is our goal, please leave 5 star feedback. Much appreciation in advance.