The Filter Element,intake Air Cleane, cataloged under National Stock Number 2940-01-323-5143, is classified within Federal Supply Class 2940 (Engine Air and Oil Filters, Strainers, and Cleaners, Nonaircraft) of the Engine Accessories group. The manufacturer of record is Alexander/ryan Marine and Safety Co. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2940-01-323-5143 |
| Primary Part Number | 611A0171 |
| Item Name | Filter Element,intake Air Cleane |
| FSC / FSG | 2940 / 29 — Engine Air and Oil Filters, Strainers, and Cleaners, Nonaircraft |
| Manufacturer | Alexander/ryan Marine and Safety Co |
| Status | ACTIVE |
| Filtering Media Design | PERFORATED SINGLE FILTERING MEDIA RESPONSE |
| Style Designator | CYLINDRICAL W/CLOSED ENDS |
| 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 |
|---|---|
| 611A0171 | Waterway Diesel Center (USA) |
| 611A0171 | Bukh A/s (DNK) |
| 611A0171 PRIMARY | Alexander/ryan Marine and Safety Co (USA) |
| Reference | Meaning |
|---|---|
| 611A0171 | 5/9 Secondary reference North Jersey Marine Enterprises Dba North Jersey Marine Enterprises Inc |
| 611A0171 | 5/9 Secondary reference L.a. Maritime Services, Inc. Div La Maritime |
NSN 2940-01-323-5143 is a Filter Element,intake Air Cleane, manufactured by Alexander/ryan Marine and Safety Co, classified under FSC 2940, Engine Air and Oil Filters, Strainers, and Cleaners, Nonaircraft. Status: active.
NSN 2940-01-323-5143 has 3 manufacturer part numbers on file: 611A0171 (Waterway Diesel Center), 611A0171 (Bukh A/s), 611A0171 (Alexander/ryan Marine and Safety Co).
Key specifications for 611A0171: Filtering Media Design: PERFORATED SINGLE FILTERING MEDIA RESPONSE; Style Designator: CYLINDRICAL W/CLOSED ENDS. 2 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.