Parts list: № Number Qty Name Options 1 BN202539 1 Sensor Next page: ST740897 Automatic Boom Leveling System, 5 Sensors, BoomTrac™ Pro, Attachment ST531549 BOOM AUTO LEVEL ST531548 Valve Assembly And Hoses ST531550 BOOMTRAC HARNESS ST531547 AUTO LEVEL CENTERFRAME BRACKETS ST739483 Attachment, BoomTrac Pro™ Boom Levelling System ST531546 BOOMTRAC JUMPER HARNESS