The Muffler,exhaust, cataloged under National Stock Number 2990-01-221-2175, is classified within Federal Supply Class 2990 (Miscellaneous Engine Accessories, Nonaircraft) of the Engine Accessories group. Government technical data includes 5 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2990-01-221-2175 |
| Item Name | Muffler,exhaust |
| FSC / FSG | 2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft |
| Status | ACTIVE |
| Operating Position | VERTICAL |
| Coolant Type | AIR |
| Design Type | DRY |
| Muffler Design | STRAIGHT THROUGH |
| Body Shape | ROUND |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| V2490 | 5/9 Secondary reference Bomag Usa Sub of United Dominion Industries Ltd |
| 31002490 | 3/9 Design control — primary reference Bomag Usa Sub of United Dominion Industries Ltd |
| 2490 | 5/9 Secondary reference Bomag Usa Sub of United Dominion Industries Ltd |
NSN 2990-01-221-2175 is a Muffler,exhaust, classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.
Key specifications for 2990-01-221-2175: Operating Position: VERTICAL; Coolant Type: AIR; Design Type: DRY; Muffler Design: STRAIGHT THROUGH. 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.