The Filter Element,fluid, cataloged under National Stock Number 2940-01-666-6309, 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 Falls Filtration Technologies, Inc.. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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.
| Item Name | Filter Element,fluid |
| FSC / FSG | 2940 — Engine Air and Oil Filters, Strainers, and Cleaners, Nonaircraft (FSG 29) |
| Manufacturers | Rolls-Royce Corporation (CAGE 63005); Falls Filtration Technologies, Inc. (CAGE 00736) |
| Parameter | Value |
|---|---|
| NSN | 2940-01-666-6309 |
| Primary Part Number | R9W2537-826 |
| Item Name | Filter Element,fluid |
| FSC / FSG | 2940 / 29 — Engine Air and Oil Filters, Strainers, and Cleaners, Nonaircraft |
| Manufacturer | Falls Filtration Technologies, Inc. |
| 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 |
|---|---|
| 23090536 | Rolls-Royce Corporation (USA) |
| R9W2537-826 PRIMARY | Falls Filtration Technologies, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 23088384 BOM FIG-ITEM 006 | D/9 Drawing number reference only Rolls-Royce Corporation |
NSN 2940-01-666-6309 is a Filter Element,fluid, manufactured by Falls Filtration Technologies, Inc., classified under FSC 2940, Engine Air and Oil Filters, Strainers, and Cleaners, Nonaircraft. Status: active.
NSN 2940-01-666-6309 has 2 manufacturer part numbers on file: 23090536 (Rolls-Royce Corporation), R9W2537-826 (Falls Filtration Technologies, Inc.).
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.