The Cylinder Sleeve and Piston Assem, cataloged under National Stock Number 2815-00-405-4223, is classified within Federal Supply Class 2815 (Diesel Engines and Components) of the Engines, Turbines, and Components group. The manufacturer of record is Komatsu America Corp.. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2815-00-405-4223 |
| Primary Part Number | 670725C91 |
| Item Name | Cylinder Sleeve and Piston Assem |
| FSC / FSG | 2815 / 28 — Diesel Engines and Components |
| Manufacturer | Komatsu America Corp. |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 670725C91 | Komatsu America Corp. (USA) |
| Reference | Meaning |
|---|---|
| 670725C91 | 3/9 Design control — primary reference Komatsu American Intl Co |
| 670 725 C91 | C/1 Advisory reference — outside the item-of-supply concept Navistar International Corporation Dba Navistar |
| 670725C91 | 5/9 Secondary reference U.S. Government activity |
NSN 2815-00-405-4223 is a Cylinder Sleeve and Piston Assem, manufactured by Komatsu America Corp., classified under FSC 2815, Diesel Engines and Components. Status: active.
NSN 2815-00-405-4223 has 1 manufacturer part number on file: 670725C91 (Komatsu America Corp.).
Key specifications for 670725C91: Special Features: CONSISTS OF 1 EA PISTON,PIN,PISTON,SLEEVE; 2 EA LOCK RINGS; 3 EA RING,PISTON; 4.500 IN. OD; 4.250 IN. ID. IN. 0 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.