The Air Cleaner,intake, cataloged under National Stock Number 2940-01-451-9278, 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 Donaldson Company, Inc.. Government technical data includes 6 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 2940-01-451-9278 |
| Primary Part Number | KSX22-0006 |
| Item Name | Air Cleaner,intake |
| FSC / FSG | 2940 / 29 — Engine Air and Oil Filters, Strainers, and Cleaners, Nonaircraft |
| Manufacturer | Donaldson Company, Inc. |
| Status | ACTIVE |
| Filter Type | DRY |
| Element Replaceability | REPLACEABLE |
| Inlet Type | OPEN |
| Functional Description | KEEPS SALT WATER SPRAY, SAND, GRASS, AND OTHER SOLID PARTICULATES FROM ENTERING GAS TURBINE ENGINE OF AMPHIBIOUS LANDING CRAFT |
| Air Cleaner Type | PERMANENT |
| Submersibility | NONSUBMERSIBLE |
| 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 |
|---|---|
| KSX22-0006 PRIMARY | Donaldson Company, Inc. (USA) |
| 251-5749994-025 | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 251-5749994 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 2940-01-451-9278 is a Air Cleaner,intake, manufactured by Donaldson Company, Inc., classified under FSC 2940, Engine Air and Oil Filters, Strainers, and Cleaners, Nonaircraft. Status: active.
NSN 2940-01-451-9278 has 2 manufacturer part numbers on file: KSX22-0006 (Donaldson Company, Inc.), 251-5749994-025 (Naval Sea Systems Command).
Key specifications for KSX22-0006: Overall Height: 41.980 INCHES NOMINAL IN; Filter Type: DRY; Element Replaceability: REPLACEABLE; Special Features: 2ND AND 3RD STAGE FILTER IN MULTI-STAGE FILTER ASSY. 6 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.