The Engine,diesel, cataloged under National Stock Number 2815-01-063-4785, 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 13 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2815-01-063-4785 |
| Primary Part Number | 9N2900 |
| Item Name | Engine,diesel |
| FSC / FSG | 2815 / 28 — Diesel Engines and Components |
| Manufacturer | Caterpillar Inc Div Caterpillar Defense |
| Status | ACTIVE |
| Reverse Speed Quantity | 1 |
| Strokes Per Cycle | 4 |
| Voltage in Volts | 12.0 |
| Crankshaft Rotation Direction | CLOCKWISE |
| Speed Range Quantity | 5 |
| Piston Action Type | SINGLE ACTING |
| Starting Method | ELECTRICAL |
| Transmission Type | HYDRAULICALLY ACTUATED |
| Cylinder Quantity | 6 |
| Forward Speed Quantity Per Range | 4 |
| Cylinder Arrangement | STRAIGHT IN-LINE |
| Standard Bore Diameter | 5.400 INCHES IN |
| Stroke Length | 6.500 INCHES IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | N |
NSN 2815-01-063-4785 is a Engine,diesel, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 2815, Diesel Engines and Components. Status: active.
NSN 2815-01-063-4785 has 2 manufacturer part numbers on file: 9N2900 (Caterpillar Inc Div Caterpillar Defense), 577709CS (Oshkosh Defense Llc).
Key specifications for 9N2900: Reverse Speed Quantity: 1; Strokes Per Cycle: 4; Voltage in Volts: 12.0; Crankshaft Rotation Direction: CLOCKWISE. 13 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.