The Air Cleaner,intake, cataloged under National Stock Number 2940-00-855-9034, 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 De Havilland Aircraft of Canada Limited. Government technical data includes 5 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 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 | 2940-00-855-9034 |
| Primary Part Number | C4SC1084-1 |
| Item Name | Air Cleaner,intake |
| FSC / FSG | 2940 / 29 — Engine Air and Oil Filters, Strainers, and Cleaners, Nonaircraft |
| Manufacturer | De Havilland Aircraft of Canada Limited |
| Status | ACTIVE |
| Filter Type | DRY |
| Backfire Valve | NOT INCLUDED |
| Pressure Relief Valve | NOT INCLUDED |
| Inlet Type | OPEN |
| Width | 4.500 INCHES NOMINAL IN |
| 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 |
|---|---|
| C4SC1084-1 PRIMARY | De Havilland Aircraft of Canada Limited (CAN) |
| C66968 | Douglas Thermal Products Ltd (CAN) |
NSN 2940-00-855-9034 is a Air Cleaner,intake, manufactured by De Havilland Aircraft of Canada Limited, classified under FSC 2940, Engine Air and Oil Filters, Strainers, and Cleaners, Nonaircraft. Status: active.
NSN 2940-00-855-9034 has 2 manufacturer part numbers on file: C4SC1084-1 (De Havilland Aircraft of Canada Limited), C66968 (Douglas Thermal Products Ltd).
1 possible match (shared part number, not a government interchangeability claim): 3110-00-960-1849. Verify interchangeability with system specifications before substitution.
Key specifications for C4SC1084-1: Overall Height: 2.000 INCHES NOMINAL IN; Filter Type: DRY; Backfire Valve: NOT INCLUDED; Overall Length: 20.000 INCHES NOMINAL IN. 5 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.