550B - BULLDOZER 18 OPERATOR'S STATION 18 Parts group 18 OPERATOR'S STATION 18 SPECIAL NOISE CONTROL ITEMS 1807 . ROPS ACOUSTICAL HEADER (WITHOUT BACKHOE) [02A20] OPERATOR ENCLOSURE 1810 . ROLL-OVER PROTECTIVE STRUCTURE (WITHOUT BACKHOE) [02A21] ROLL-OVER PROTECTIVE STRUCTURE (WITH BACKHOE) [02A22] LIMB RISERS (WHEN EQUIPPED WITH ROLL-OVER PROTECTIVE STRUCTURE) [02A24] PLATFORMS [02A25] VANDAL PROTECTION COVER [02B01] FENDER SHIELD, REAR COVER AND EXTENSION [02B02] WINDSHIELD WIPER [02B03] CAB DOOR [02B04] CAB WINDOW GLASS AND FRONT FILLER [02B05] CAB ACOUSTICAL FOAM [02B06] CAB FUEL TANK ENCLOSURE SEALS [02B07] CAB [02B08] REAR SCREEN [02B10] REAR WINDOW CAB SCREEN FIELD KIT [02B11] SEAT 1821 . SEAT [02B12] SEAT BELT 51 MM (2") WIDE [02B14] SEAT BELT 76 MM (3") WIDE [02B15] STEPS AND HANDHOLDS 1822 . HANDRAIL [02B16] Select group 18 OPERATOR'S STATION 18 John Deere: SPECIAL NOISE CONTROL ITEMS 1807 OPERATOR ENCLOSURE 1810 SEAT 1821 STEPS AND HANDHOLDS 1822