Parts list: № Number Qty Name Options 1 ADX12016 1 Steering Control Unit For W/O Mechanical Rear Wheel Drive Machine 1 ADX12017 1 Steering Control Unit For Mechanical Rear Wheel Drive Machine 2 ADX12018 4 Fitting 3 51M7043 4 O-Ring 15.300 X 2.200 mm 4 DX13729 4 Fitting Next page: ST924056 Wring Harness for ATU 300 to ATU 200 Adapter ST830016 Attachment, Steering Shaft Cover, AutoTrac™ Universal 200 ST821130 Attachment, AutoTrac™ Universal, W330 W440 Combines ST903387 Steering Column Kit, R230, C230, C240 ST72794 Steering Column Kit, Universal 200, John Deere™ Machines W/ Mclaughlin Cabs ST943617 Attachment, GreenStar™ RS232 Adapter Harness ST744932 Attachment, AutoTrac™ Universal Steering Supplemental Kit - L