Parts list: № Number Qty Name Options 1 T77814 4 O-Ring 7.645 X 1.778 mm (0.301" X 0.070") 2 AL165776 1 Oil Line 3 AL80837 1 Spool Valve 4 38H5183 1 Elbow Fitting 5 AL166330 1 Hydraulic Hose 9/16" X 1890 mm (74-1/2") X 9/16" Next page: ST73140 AutoTrac™ Tractor Kit, TEC Control Unit Harness, 6230, 6330, 6430, 6530, 6630 ST73141 AutoTrac™ Tractor Kit, SSU and Steering Input Harness, 6230, 6330, 6430, 6530, 6630 ST73143 AutoTrac™ Tractor Kit, Steering System Unit (SSU), 6230, 6330, 6430, 6530, 6630 ST73151 AutoTrac™ Tractor Kit, Steering Angle Sensor Harness and Guard, 7130, 7230, 7330, 7430, 7530 ST73154 AutoTrac™ Tractor Kit, Shuttle Valve, 6320, 6420 ST73128 AutoTrac™ Tractor Kit, Brake System W/ Hydraulic Trailer Brake, 6320, 6420 ST73126 AutoTrac™ Tractor Kit, Steering System Unit (SSU) Harness, 6420 - 6920, 7220 - 7520 Premium and Premium Plus ST73119 AutoTrac™ Tractor Kit, Sequence Switch, 6320, 6420 ST72987 AutoTrac™ Tractor Kit, SSU Harness, 7X15, 7X20 ST719739 Attachment, AutoTrac™ Tractor Kit, 8X20 W/ Mechanical Front Wheel Drive (MFWD)