The Oil Pump Assembly,engine, cataloged under National Stock Number 2805-01-221-7425, is classified within Federal Supply Class 2805 (Gasoline Reciprocating Engines, Except Aircraft; and Components) of the Engines, Turbines, and Components group. The manufacturer of record is Rolls-Royce Corporation. The record lists 3 manufacturer part numbers 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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.
| Item Name | Oil Pump Assembly,engine |
| FSC / FSG | 2805 — Gasoline Reciprocating Engines, Except Aircraft; and Components (FSG 28) |
| Manufacturers | Allison Transmission Inc Dba Allison Transmission, Inc (CAGE 73342); Boeing Distribution, Inc. (CAGE 22819); Rolls-Royce Corporation (CAGE 63005) |
| Parameter | Value |
|---|---|
| NSN | 2805-01-221-7425 |
| Primary Part Number | 6853540 |
| Item Name | Oil Pump Assembly,engine |
| FSC / FSG | 2805 / 28 — Gasoline Reciprocating Engines, Except Aircraft; and Components |
| Manufacturer | Rolls-Royce Corporation |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | F |
| Part Number | Manufacturer |
|---|---|
| 6853540 | Allison Transmission Inc Dba Allison Transmission, Inc (USA) |
| 6853540 | Boeing Distribution, Inc. (USA) |
| 6853540 PRIMARY | Rolls-Royce Corporation (USA) |
| Reference | Meaning |
|---|---|
| 23053321 | 5/9 Secondary reference Boeing Distribution, Inc. |
| 23053321 | 5/9 Secondary reference Rolls-Royce Corporation |
| 23053321 | 5/9 Secondary reference Allison Transmission Inc Dba Allison Transmission, Inc |
NSN 2805-01-221-7425 is a Oil Pump Assembly,engine, manufactured by Rolls-Royce Corporation, classified under FSC 2805, Gasoline Reciprocating Engines, Except Aircraft; and Components. Status: active.
NSN 2805-01-221-7425 has 3 manufacturer part numbers on file: 6853540 (Allison Transmission Inc Dba Allison Transmission, Inc), 6853540 (Boeing Distribution, Inc.), 6853540 (Rolls-Royce Corporation).
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.