The Filter Element,fluid, cataloged under National Stock Number 2945-01-321-5058, is classified within Federal Supply Class 2945 (Engine Air and Oil Filters, Cleaners, Aircraft Prime Moving) of the Engine Accessories group. The manufacturer of record is Hydro-Aire Aerospace Corp. Dba Lear Romec Div Lear Romec. Government technical data includes 7 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2945-01-321-5058 |
| Primary Part Number | RD37163 |
| Item Name | Filter Element,fluid |
| FSC / FSG | 2945 / 29 — Engine Air and Oil Filters, Cleaners, Aircraft Prime Moving |
| Manufacturer | Hydro-Aire Aerospace Corp. Dba Lear Romec Div Lear Romec |
| Status | ACTIVE |
| Surface Treatment Document and Classification | CP-3001,TYPE 4 MFR REF SINGLE TREATMENT RESPONSE SCREENING |
| Design Type | REUSABLE |
| Material Document and Classification | QQ-S-766 FED SPEC SINGLE MATERIAL RESPONSE SCREENING |
| Filtering System for Which Designed | FULL FLOW |
| Surface Treatment | PASSIVATE SCREENING |
| Media for Which Designed | FUEL/OIL, HYDROCARBON |
| Material | STEEL COMP 304L SCREENING |
| 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 |
|---|---|
| RD37163 PRIMARY | Hydro-Aire Aerospace Corp. Dba Lear Romec Div Lear Romec (USA) |
| Reference | Meaning |
|---|---|
| 23775 | D/9 Drawing number reference only Williams International Co., L.l.c. |
NSN 2945-01-321-5058 is a Filter Element,fluid, manufactured by Hydro-Aire Aerospace Corp. Dba Lear Romec Div Lear Romec, classified under FSC 2945, Engine Air and Oil Filters, Cleaners, Aircraft Prime Moving. Status: active.
NSN 2945-01-321-5058 has 1 manufacturer part number on file: RD37163 (Hydro-Aire Aerospace Corp. Dba Lear Romec Div Lear Romec).
3 possible matches (shared part number, not a government interchangeability claim): 2910-01-322-2705, 1680-01-553-5650, 6515-01-559-1472. Verify interchangeability with system specifications before substitution.
Key specifications for RD37163: Surface Treatment Document and Classification: CP-3001,TYPE 4 MFR REF SINGLE TREATMENT RESPONSE SCREENING; Design Type: REUSABLE; Material Document and Classification: QQ-S-766 FED SPEC SINGLE MATERIAL RESPONSE SCREENING; Filtering System for Which Designed: FULL FLOW. 7 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.