The Muffler,exhaust, cataloged under National Stock Number 2990-01-025-7707, is classified within Federal Supply Class 2990 (Miscellaneous Engine Accessories, Nonaircraft) of the Engine Accessories group. The manufacturer of record is Harbormaster Marine, Inc. Government technical data includes 7 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number 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 | 2990-01-025-7707 |
| Primary Part Number | 32954 |
| Item Name | Muffler,exhaust |
| FSC / FSG | 2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft |
| Manufacturer | Harbormaster Marine, Inc |
| Status | ACTIVE |
| Inlet Location | ON SIDE OF BODY,ON SIDE OF BODY |
| Coolant Type | AIR |
| Design Type | DRY |
| Inlet Connection Type | UNTHREADED FIRST INLET |
| Inlet Connection Type | UNTHREADED SECOND INLET |
| Body Shape | ROUND |
| Outlet Connection Type | UNTHREADED 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 |
|---|---|
| 32954 PRIMARY | Harbormaster Marine, Inc (USA) |
NSN 2990-01-025-7707 is a Muffler,exhaust, manufactured by Harbormaster Marine, Inc, classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.
NSN 2990-01-025-7707 has 1 manufacturer part number on file: 32954 (Harbormaster Marine, Inc).
1 possible match (shared part number, not a government interchangeability claim): 4730-01-566-6350. Verify interchangeability with system specifications before substitution.
Key specifications for 32954: Inlet Location: ON SIDE OF BODY,ON SIDE OF BODY; Coolant Type: AIR; Design Type: DRY; Inlet Connection Type: UNTHREADED FIRST INLET. 7 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.