The Muffler,exhaust, cataloged under National Stock Number 2990-00-540-5579, is classified within Federal Supply Class 2990 (No Item Name Available) of the Engine Accessories group. The primary manufacturer of record is Naval Sea Systems Command. Government technical data includes 21 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2990-00-540-5579 |
| Primary Part Number | 1942260 |
| Item Name | Muffler,exhaust |
| FSC / FSG | 2990 / 29 — No Item Name Available |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Operating Position | HORIZONTAL |
| Baffle Quantity | 1 |
| Inlet Projection Length | 1.313 INCHES NOMINAL SINGLE INLET IN |
| Muffler Design | BAFFLE |
| Outlet Inside Diameter | 1.200 INCHES NOMINAL FIRST OUTLET IN |
| Outlet Outside Diameter | 1.250 INCHES NOMINAL FIRST OUTLET IN |
| Body Shape | ROUND |
| Thread Direction | RIGHT-HAND SINGLE INLET |
| Inlet Location | CENTRALLY IN END SECTION OF BODY |
| Outlet Connection Type | UNTHREADED FIRST OUTLET |
| Inlet Connection Type | THREADED SINGLE INLET |
| Inlet Thread Location | EXTERNAL SINGLE INLET |
| Design Type | DRY |
| Outlet Integral Tail Pipe Length | 11.750 INCHES NOMINAL FIRST OUTLET IN |
| Overall Diameter | 4.375 INCHES NOMINAL IN |
| Coolant Type | AIR |
| Material | STEEL CORROSION RESISTING LOCATION NOT OTHERWISE SPECIFIED |
| Outlet Location | CENTRALLY IN END SECTION OF BODY |
| Outlet Projection Length | 6.000 INCHES NOMINAL FIRST OUTLET IN |
| Inlet Thread Size | 1-1/4-11-1/2 SINGLE INLET |
| Tube Quantity | 1 |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 1942260 PRIMARY | Naval Sea Systems Command (USA) |
| 155C372 | Cummins Power Generation Inc. (USA) |
| 155-372 | Cummins Power Generation Inc. (USA) |
| S28938 | Amz Alabama Inc. (USA) |
| 155-0372 | Cummins Power Generation Inc. (USA) |
| S28938 | Bae Systems Land & Armaments L.p. (USA) |
| 1942260 | Naval Ship Systems Command (USA) |
NSN 2990-00-540-5579 is a Muffler,exhaust, manufactured by Naval Sea Systems Command, classified under FSC 2990 (No Item Name Available). Status: active.
NSN 2990-00-540-5579 has 7 cross-referenced part numbers: 1942260 (Naval Sea Systems Command), 155C372 (Cummins Power Generation Inc.), 155-372 (Cummins Power Generation Inc.), S28938 (Amz Alabama Inc.), 155-0372 (Cummins Power Generation Inc.) and 2 more.
There are 3 known substitutes for 2990-00-540-5579: 5360-00-812-0196, 5360-01-331-9270, 5365-01-355-0947. Verify interchangeability with system specifications before substitution.
Key specifications for 1942260: Operating Position: HORIZONTAL; Baffle Quantity: 1; Inlet Projection Length: 1.313 INCHES NOMINAL SINGLE INLET IN; Muffler Design: BAFFLE. 22 total characteristics are documented in the Federal Logistics Information System.