The Engine,diesel, cataloged under National Stock Number 2815-01-331-1879, is classified within Federal Supply Class 2815 (Diesel Engines and Components) of the Engines, Turbines, and Components group. The manufacturer of record is Caterpillar Inc Div Caterpillar Defense. Government technical data includes 4 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2815-01-331-1879 |
| Primary Part Number | D398PC ARR. 5N7277 |
| Item Name | Engine,diesel |
| FSC / FSG | 2815 / 28 — Diesel Engines and Components |
| Manufacturer | Caterpillar Inc Div Caterpillar Defense |
| Status | ACTIVE |
| Crankshaft Rotation Direction | COUNTERCLOCKWISE |
| Cylinder Quantity | 12 |
| Standard Bore Diameter | 6.250 INCHES IN |
| Stroke Length | 7.000 INCHES IN |
| 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 |
|---|---|
| D398PC ARR. 5N7277 PRIMARY | Caterpillar Inc Div Caterpillar Defense (USA) |
| D398PC SER.NO. 35Z01060 | Caterpillar Inc Div Caterpillar Defense (USA) |
NSN 2815-01-331-1879 is a Engine,diesel, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 2815, Diesel Engines and Components. Status: active.
NSN 2815-01-331-1879 has 2 manufacturer part numbers on file: D398PC ARR. 5N7277 (Caterpillar Inc Div Caterpillar Defense), D398PC SER.NO. 35Z01060 (Caterpillar Inc Div Caterpillar Defense).
Key specifications for D398PC ARR. 5N7277: Crankshaft Rotation Direction: COUNTERCLOCKWISE; Cylinder Quantity: 12; Standard Bore Diameter: 6.250 INCHES IN; End Item Identification: DIESEL ENGINES AND COMPONENTS. 4 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.