The Oil Pump Assembly,engine, cataloged under National Stock Number 2990-01-570-4817, is classified within Federal Supply Class 2990 (Miscellaneous Engine Accessories, Nonaircraft) of the Engine Accessories group. The manufacturer of record is Johnson Controls Navy Systems, Llc. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2990-01-570-4817 |
| Primary Part Number | 026-45541-000 |
| Item Name | Oil Pump Assembly,engine |
| FSC / FSG | 2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft |
| Manufacturer | Johnson Controls Navy Systems, Llc |
| 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 |
|---|---|
| 026-45541-000 PRIMARY | Johnson Controls Navy Systems, Llc (USA) |
| 077-16668-001 PC NO 7 | Johnson Controls Navy Systems, Llc (USA) |
| Reference | Meaning |
|---|---|
| 3G951-0542 | 5/9 Secondary reference Tuthill Corporation Dba Tuthill Pump Group |
NSN 2990-01-570-4817 is a Oil Pump Assembly,engine, manufactured by Johnson Controls Navy Systems, Llc, classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.
NSN 2990-01-570-4817 has 2 manufacturer part numbers on file: 026-45541-000 (Johnson Controls Navy Systems, Llc), 077-16668-001 PC NO 7 (Johnson Controls Navy Systems, Llc).
1 possible match (shared part number, not a government interchangeability claim): 4310-01-616-4147. Verify interchangeability with system specifications before substitution.
Key specifications for 026-45541-000: Special Features: FSC HAS BEEN CHANGED TO 2990; Part Name Assigned by Controlling Agency: PUMP ASSEMBLY, OIL; End Item Identification: PUMP ASSY, OIL 026-45541-000. 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.