| Item | Part No. | Part Name | Qty | Serial No. |
| 273-43-63180 | CYLINDER ASS'Y,BRAKE MASTER | | 21001- |
| | THE MIYAKO JIDOHSYA PART NUMBER IS THAT MY IS REMOVED FROM KOMATSU PART NUMBER LISTED BELOW. | | |
| 1 | \6\ | CYLINDER | | 21001- |
| 2 | \6\ | PISTON ASS'Y (KIT) | | 21001- |
| 3 | \6\ | SPRING (KIT) | | 21001- |
| 4 | \6\ | WIRE (KIT) | | 21001- |
| 5 | \6\ | GASKET (KIT) | | 21001- |
| 6 | \6\ | O-RING (KIT) | | 21001- |
| 7 | \6\ | BOOT (KIT) | | 21001- |
| 8 | MY361-0045-00 | PIN | | 21001- |
| 9 | MY372-7207-00 | ROD | | 21001- |
| 10 | MY331-0049-00 | PLATE | | 21001- |
| 11 | MY349-7250-00 | COUPLER | | 21001- |
| 12 | MY387-0048-00 | CLAMP | | 21001- |
| 13 | MY351-0043-00 | GASKET | | 21001- |
| 14 | MY363-8011-00 | NUT | | 21001- |
| | SERVICE KIT | | |
| KIT | MY212-7574-00 | SERVICE KIT,MASTER CYLINDER | | 21001- |
