| Item | Part No. | Part Name | Qty | Serial No. |
| | SERIAL NO. 80199 INDICATES D21A-7. THE OTHER MACHINES ARE AS FOLLOWS. | | |
| | D20A-7 = 80089 | | |
| | D20A-7B = 80060 | | |
| | D21A-7B = 80143 | | |
| 1 | 09690-C0224 | PLATE¤ MARK,KOMATSU | | 78604-@ |
| 2 | 101-98-51971 | PLATE¤ MARK,D20A | | 78604-@ |
| 3 | 114-98-51130 | PLATE¤ OPERATING,DOZER LEVER | | 80199-@ |
| 114-54-48611 | PLATE¤ OPERATING,DOZER LEVER | | 78604-80198 |
| 4 | 114-98-44250 | PLATE¤ OPERATING,WORK EQUIPMENT¤ LEVER LOCK | | 78604-@ |
| 5 | 101-14-11191 | PLATE¤ OPERATING,DILECT TRANSMISSION | | 78604-@ |
| 6 | 104-98-32134 | CHART¤ OIL | | 78928-@ |
| 104-98-32133 | CHART¤ OIL | | 78604-78927 |
| 7 | 101-98-51952 | PLATE¤ DATA | | 78604-@ |
| 8 | 09601-00835 | PLATE¤ NAME,(LIMITED SUPPLY) | | 78604-@ |
| 9 | 04418-13060 | SCREW | | 78604-@ |
| 10 | 104-98-44420 | PLATE¤ MARK,KOMATSU¤ L.H. | | 78604-@ |
| 104-98-44430 | PLATE¤ MARK,KOMATSU¤ R.H. | | 78604-@ |
| 11 | 114-98-44170 | PLATE¤ OPERATING,STEERING LEVER | | 78604-@ |
| 134-98-11210 | PLATE KIT | | 78604-80846 |
| 12 | \6\ | PLATE¤ SAFETY,HYDRAULIC TANK | | 78604-80846 |
| 13 | \6\ | PLATE¤ SAFETY,RADIATOR | | 78604-80846 |
| 14 | \6\ | PLATE¤ CAUTION,BEFORE AND AFTER OPERATION | | 78604-80846 |
| 15 | \6\ | PLATE¤ SAFETY,BEFORE OPERATING | | 78604-80846 |
| 16 | \6\ | PLATE¤ CAUTION,SAFETY COMFIRM OF REAR | | 78604-80846 |
| 17 | 21X-98-21190 | TAG¤ CAUTION,DO NOT OPERATE | | 78604-80846 |
| 18 | 14X-98-11161 | PLATE¤ SAFETY,ADJUSTING TRACK SHOE | | 78604-@ |
| 19 | 09652-01101 | PLATE¤ CAUTION,FUEL TANK | | 78604-@ |
| 20 | 09637-01163 | PLATE¤ INSTRUCTION,AIR CLEANER | | 78604-@ |
| 21 | 103-98-21251 | PLATE¤ INSTRUCTION,HYDRAULIC TANK¤ FILTER | | 78604-@ |
| 22 | 104-98-41310 | PLATE¤ CAUTION | | 78928-@ |
