550B - BULLDOZER OPERATOR ENCLOSURE 1810 Parts group OPERATOR ENCLOSURE 1810 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]