| Item | Part No. | Part Name | Qty | Serial No. |
| 6217-61-8231 | HEAD ASSEMBLY | |||
| 1 | (NSS) | HEAD, CORROSION | ||
| 2 | 6217-61-8221 | VALVE | ||
| 3 | 07000-A2021 | O-RING | ||
| 4 | 600-411-1161 | CARTRIDGE | ||
| OR | ||||
| 5 | 600-411-9000 | CAP | ||
| 6 | 01437-01060 | BOLT | ||
| 7 | 01435-01035 | BOLT | ||
| 8 | 01436-01000 | BOLT | ||
| 9 | 6261-61-8251 | BRACKET | ||
| 10 | 6215-71-4940 | CLAMP | ||
| 11 | 6631-11-5630 | SPACER | ||
| 12 | 01435-01045 | BOLT | ||
| 13 | 01435-01020 | BOLT | ||
| 14 | 01643-31032 | WASHER | ||
| 15 | 6261-61-8440 | TUBE, INLET | ||
| 16 | 6261-61-8450 | TUBE, OUTLET | ||
| 17 | 07005-01412 | GASKET | ||
| 18 | 07206-31014 | BOLT, JOINT | ||
| 19 | 01435-01035 | BOLT | ||
| 20 | 6631-11-6390 | SPACER | ||
| 21 | 209-62-11810 | SPACER | ||
| 22 | 01435-01085 | BOLT | ||
| F1 - COVER IS USED IN PLACE OF CORROSION RESISTOR WHEN USING RECOMMENDED KOMATSU SUPERCOOLANT. | ||||
| F2 - COVER IS USED IN PLACE OF CORROSION RESISTOR WHEN USING RECOMMENDED KOMATSU SUPERCOOLANT. | ||||
| F3 - FOR MACHINES WITH ENGINE SERIAL NUMBERS 532378 AND UP. | ||||
| F4 - FOR MACHINES WITH ENGINE SERIAL NUMBERS 532441 AND UP. |