RTV-X1120DG2 CARGO BED Parts group RTV-X1120DG2 L00101 BOX BASE L00501 BOX PLATE L01001 BOX GATE L01600 BOX GATE LOCK (LEFT) L01700 BOX GATE LOCK (RIGHT) L02001 BOX COVER L03000 BOX LOCK sale parts diagram catalog online construction equipment excavator tractor