The Muffler,exhaust, cataloged under National Stock Number 2990-00-457-1824, is classified within Federal Supply Class 2990 (No Item Name Available) of the Engine Accessories group. The primary manufacturer of record is Stemco Inc Sub of Coltec Industries Inc. Government technical data includes 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2990-00-457-1824 |
| Primary Part Number | 190-9129 |
| Item Name | Muffler,exhaust |
| FSC / FSG | 2990 / 29 — No Item Name Available |
| Manufacturer | Stemco Inc Sub of Coltec Industries Inc |
| Status | ACTIVE |
| Tube Quantity | 3 |
| Inlet Connection Type | UNTHREADED SINGLE INLET |
| Body Shape | ROUND |
| Muffler Design | MULTIPASS |
| Outlet Inside Diameter | 4.000 INCHES NOMINAL FIRST OUTLET IN |
| Outlet Connection Type | UNTHREADED FIRST OUTLET |
| Inlet Projection Length | 3.250 INCHES NOMINAL SINGLE INLET IN |
| Surface Treatment | ALUMINUM ALLOY |
| Inlet Location | CENTERED ON END OF BODY |
| Inlet Inside Diameter | 4.000 INCHES NOMINAL SINGLE INLET IN |
| Outlet Location | CENTERED ON END OF BODY |
| Material | STEEL LOCATION NOT OTHERWISE SPECIFIED |
| Outlet Projection Length | 3.250 INCHES NOMINAL FIRST OUTLET IN |
| Baffle Quantity | 6 |
| Overall Diameter | 7.000 INCHES NOMINAL IN |
| Coolant Type | AIR |
| Design Type | DRY |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
NSN 2990-00-457-1824 is a Muffler,exhaust, manufactured by Stemco Inc Sub of Coltec Industries Inc, classified under FSC 2990 (No Item Name Available). Status: active.
NSN 2990-00-457-1824 has 3 cross-referenced part numbers: 077-6163 (Marathon Le Tourneau Co), 9129 (Stemco Inc Sub of Coltec Industries Inc), 190-9129 (Stemco Inc Sub of Coltec Industries Inc).
There are 8 known substitutes for 2990-00-457-1824: 2815-00-036-4642, 5920-00-280-5066, 4820-01-090-6539 and 5 more. Verify interchangeability with system specifications before substitution.
Key specifications for 190-9129: Tube Quantity: 3; Inlet Connection Type: UNTHREADED SINGLE INLET; Body Shape: ROUND; Muffler Design: MULTIPASS. 18 total characteristics are documented in the Federal Logistics Information System.