The Muffler,exhaust, cataloged under National Stock Number 2990-01-411-3947, is classified within Federal Supply Class 2990 (Miscellaneous Engine Accessories, Nonaircraft) of the Engine Accessories group. The manufacturer of record is Am General Llc. Government technical data includes 4 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2990-01-411-3947 |
| Primary Part Number | 12460090 |
| Item Name | Muffler,exhaust |
| FSC / FSG | 2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft |
| Manufacturer | Am General Llc |
| Status | ACTIVE |
| Operating Position | VERTICAL |
| Inlet Connection Type | FLANGE SINGLE INLET |
| Material | STEEL CORROSION RESISTING LOCATION NOT OTHERWISE SPECIFIED |
| Outlet Connection Type | FLANGE FIRST OUTLET |
| 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 |
|---|---|
| 12460090 PRIMARY | Am General Llc (USA) |
| 12460090 | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 2990PL0382397 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| 2990014113947 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
NSN 2990-01-411-3947 is a Muffler,exhaust, manufactured by Am General Llc, classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.
NSN 2990-01-411-3947 has 2 manufacturer part numbers on file: 12460090 (Am General Llc), 12460090 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 12460090: Operating Position: VERTICAL; Inlet Connection Type: FLANGE SINGLE INLET; End Item Identification: 2320-01-380-8233; Material: STEEL CORROSION RESISTING LOCATION NOT OTHERWISE SPECIFIED. 4 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.