The Breather, cataloged under National Stock Number 2520-01-587-3985, is classified within Federal Supply Class 2520 (Vehicular Power Transmission Components) of the Vehicular Equipment Components group. The manufacturer of record is Meritor Heavy Vehicle Systems, Llc. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | Breather |
| FSC / FSG | 2520 — Vehicular Power Transmission Components (FSG 25) |
| Manufacturers | Meritor Heavy Vehicle Systems, Llc (CAGE 78500); Nd Defense Llc (CAGE 338X5) |
| Parameter | Value |
|---|---|
| NSN | 2520-01-587-3985 |
| Primary Part Number | A-1199-R-4048 |
| Item Name | Breather |
| FSC / FSG | 2520 / 25 — Vehicular Power Transmission Components |
| Manufacturer | Meritor Heavy Vehicle Systems, Llc |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| A-1199-R-4048 PRIMARY | Meritor Heavy Vehicle Systems, Llc (USA) |
| 3816936C1 | Nd Defense Llc (USA) |
| Reference | Meaning |
|---|---|
| A-1199-R-4048S | 5/9 Secondary reference Meritor Heavy Vehicle Systems, Llc |
NSN 2520-01-587-3985 is a Breather, manufactured by Meritor Heavy Vehicle Systems, Llc, classified under FSC 2520, Vehicular Power Transmission Components. Status: active.
NSN 2520-01-587-3985 has 2 manufacturer part numbers on file: A-1199-R-4048 (Meritor Heavy Vehicle Systems, Llc), 3816936C1 (Nd Defense Llc).
Possible hazard — SDS may be required (DLA HMIC P). 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.