The Muffler,exhaust, cataloged under National Stock Number 2990-00-341-4059, is classified within Federal Supply Class 2990 (Miscellaneous Engine Accessories, Nonaircraft) of the Engine Accessories group. The manufacturer of record is Dresser Industries Inc Leroi Div. The record lists 2 manufacturer part numbers 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.
| Item Name | Muffler,exhaust |
| FSC / FSG | 2990 — Miscellaneous Engine Accessories, Nonaircraft (FSG 29) |
| Manufacturers | Dresser Industries Inc Leroi Div (CAGE 35301) |
| Parameter | Value |
|---|---|
| NSN | 2990-00-341-4059 |
| Primary Part Number | 78-123 |
| Item Name | Muffler,exhaust |
| FSC / FSG | 2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft |
| Manufacturer | Dresser Industries Inc Leroi Div |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
NSN 2990-00-341-4059 is a Muffler,exhaust, manufactured by Dresser Industries Inc Leroi Div, classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.
NSN 2990-00-341-4059 has 2 manufacturer part numbers on file: A78-51-1 (Dresser Industries Inc Leroi Div), 78-123 (Dresser Industries Inc Leroi Div).
1 possible match (shared part number, not a government interchangeability claim): 5305-01-254-7810. Verify interchangeability with system specifications before substitution.
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.