| Item | Part No. | Part Name | Qty | Serial No. |
| 6210-81-3111 | AIR COMPRESSOR ASS'Y | 17056- | ||
| THE NIKKO DENKI PART NUMBER IS THAT KD IS REMOVED FROM KOMATSU PART NUMBER LISTED BELOW. | ||||
| 1 | DK487000-6500 | CASE,CRANK | 17056- | |
| 2 | DK487653-0300 | CRANKSHAFT | 17056- | |
| 3 | DK035620-6000 | BEARING | 17056- | |
| 4 | DK036202-0700 | BEARING | 17056- | |
| 5 | DK487003-7301 | COVER,BEARING | 17056- | |
| 6 | DK487061-4300 | O-RING (K8) | 17056- | |
| 7 | DK487061-4500 | O-RING (K8) | 17056- | |
| 8 | DK487061-3700 | O-RING (K8) | 17056- | |
| 9 | DK487001-3200 | CYLINDER | 17056- | |
| 10 | DK487013-2100 | CONNECTING ROD A. | 17056- | |
| 11 | DK487009-2000 | PISTON | 17056- | |
| 12 | DK487010-4720 | RING KIT,PISTON | 17056- | |
| 13 | DK487012-0100 | PIN,PISTON | 17056- | |
| 14 | DK016110-1610 | RING,SNAP | 17056- | |
| 15 | DK487020-2200 | GASKET (K8) | 17056- | |
| DK487018-5220 | CYLINDER HEAD ASS'Y | 17056- | ||
| DK487018-5320 | CYLINDER HEAD A. | 17056- | ||
| 16 | DK487018-5300 | HEAD,CYLINDER | 17056- | |
| 17 | DK487061-4000 | O-RING (K8) | 17056- | |
| 18 | DK487042-1100 | GUIDE,SPRING | 17056- | |
| 19 | DK487061-4100 | O-RING (K8) | 17056- | |
| 20 | DK487031-2000 | SPRING,DELIVERY VALVE | 17056- | |
| 21 | DK487026-1700 | VALVE,PLATE | 17056- | |
| 22 | DK487030-2200 | SEAT,DELIVERY VALVE | 17056- | |
| 23 | DK487024-1300 | SPRING,UNLOADER VALVE | 17056- | |
| 24 | DK487039-0300 | GASKET (K8) | 17056- | |
| 25 | DK487025-1000 | SEAT,INTAKE VALVE | 17056- | |
| 26 | DK487026-1601 | VALVE,PLATE | 17056- | |
| 27 | DK487027-1200 | SPRING,INTAKE VALVE | 17056- | |
| 28 | DK487028-1700 | GUIDE,INTAKE VALVE | 17056- | |
| 29 | DK487021-2320 | UNLOADER VALVE A. | 17056- | |
| 30 | DK487073-0900 | FLANGE | 17056- | |
| 31 | DK156603-4400 | BOLT | 17056- | |
| 32 | DK010110-2570 | BOLT | 17056- | |
| 33 | DK487088-0000 | BOLT | 17056- | |
| 34 | DK014110-8440 | WASHER,SPRING | 17056- | |
| 35 | DK014111-0440 | WASHER,SPRING | 17056- | |
| 36 | DK487351-0800 | WASHER,SPRING | 17056- | |
| 37 | DK014020-8140 | WASHER | 17056- | |
| 38 | DK487017-1600 | BOLT | 17056- | |
| 39 | DK487088-0100 | BOLT | 17056- |