The Muffler,exhaust, cataloged under National Stock Number 2990-01-037-1525, is classified within Federal Supply Class 2990 (No Item Name Available) of the Engine Accessories group. The primary manufacturer of record is Walker Mfg Co. Government technical data includes 16 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2990-01-037-1525 |
| Primary Part Number | 22004 |
| Item Name | Muffler,exhaust |
| FSC / FSG | 2990 / 29 — No Item Name Available |
| Manufacturer | Walker Mfg Co |
| Status | ACTIVE |
| Surface Treatment | ALUMINUM ALLOY |
| Outlet Projection Length | 2.000 INCHES NOMINAL FIRST OUTLET IN |
| Inlet Location | OFFSET IN END SECTION OF BODY 2.500 IN. C OF INLET TO C OF BODY IN |
| Material | STEEL LOCATION NOT OTHERWISE SPECIFIED |
| Outlet Connection Type | UNTHREADED FIRST OUTLET |
| Material | ASBESTOS INSULATION |
| Tube Quantity | 3 |
| Outlet Location | OFFSET IN END SECTION OF BODY 2.500 IN. C OF OUTLET TO C OF BODY IN |
| Inlet Inside Diameter | 4.000 INCHES NOMINAL SINGLE INLET IN |
| Inlet Projection Length | 2.000 INCHES NOMINAL SINGLE INLET IN |
| Body Shape | OVAL |
| Outlet Inside Diameter | 4.000 INCHES NOMINAL FIRST OUTLET IN |
| Muffler Design | BAFFLE |
| Design Type | JACKETED |
| Inlet Connection Type | UNTHREADED SINGLE INLET |
| Operating Position | HORIZONTAL |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 520541C1 | Navistar International Corporation Dba Navistar (USA) |
| 520541C1 | Navistar Intl Corp Melrose Park Engine Plant Location /melrose Park/ (USA) |
| 324937C91 | Navistar Intl Corp Truck Br Ohio Plant (USA) |
| 22004 PRIMARY | Walker Mfg Co (USA) |
| 520541C1 PRIMARY | Navistar Intl Corp Truck Br Ohio Plant (USA) |
NSN 2990-01-037-1525 is a Muffler,exhaust, manufactured by Walker Mfg Co, classified under FSC 2990 (No Item Name Available). Status: active.
NSN 2990-01-037-1525 has 5 cross-referenced part numbers: 520541C1 (Navistar International Corporation Dba Navistar), 520541C1 (Navistar Intl Corp Melrose Park Engine Plant Location /melrose Park/), 324937C91 (Navistar Intl Corp Truck Br Ohio Plant), 22004 (Walker Mfg Co), 520541C1 (Navistar Intl Corp Truck Br Ohio Plant).
There are 12 known substitutes for 2990-01-037-1525: 5960-00-107-7583, 3110-00-156-3444, 4730-00-184-9124 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for 22004: Surface Treatment: ALUMINUM ALLOY; Outlet Projection Length: 2.000 INCHES NOMINAL FIRST OUTLET IN; Inlet Location: OFFSET IN END SECTION OF BODY 2.500 IN. C OF INLET TO C OF BODY IN; Material: STEEL LOCATION NOT OTHERWISE SPECIFIED. 19 total characteristics are documented in the Federal Logistics Information System.