Parts list: № Number Qty Name Options 1 19M7837 3 Screw M12 X 110 2 DE30205 1 Crankcase 3 19M8306 5 Screw M12 X 50 4 25M3827 2 Groove Pin 3 X 8 mm 5 CE20769 1 Pinion Z = 30 6 CE21337 1 Pinion Z = 33 7 RE274175 4 Ball Bearing 8 CE30400 1 Housing Next page: ST871821 Primary Countershaft, High Capacity (1 of 2) ST840221 Main Gear Case Pressure Regulating Valve ST870011 Air Compressor Fixed Fan Drive ST871879 Air Compressor, Tier 2 / Tier 3 / Final Tier 4 ST870130 Air Compressor Belt Drive ST871822 Primary Countershaft, High Capacity (2 of 2) ST836983 After Treatment Blower Drive ST837132 Cooling Package Air Screen Drive, Screen Side ST838373 Front Engine Drive, Final Tier 4 ST870026 V-belt, Front Engine Drives W/ Air Compressor