Parts list: № Number Qty Name Options 1 R542221 4 Screw 2 RE593381 1 Electronic Control Unit Next page: ST953634 Steering Controller, AutoTrac™ W/ Backup Pump ( - 080000) ST959420 Multi Functional Controller, Roof ST959427 Multi Functional Controller, Front Control, Steering ST953645 Multi-Functional Controller, Cab Control ST959416 Multi-Functional Controller, Chassis ST1058983 Steering Controller, AutoTrac™ W/ Backup Pump (080001 - ) PICT-OSO.1 OSO Control Units