The Muffler,exhaust, cataloged under National Stock Number 2990-00-441-7634, is classified within Federal Supply Class 2990 (No Item Name Available) of the Engine Accessories group. The primary manufacturer of record is Komatsu America Corp.. Government technical data includes 20 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 8 commercial cross-references from 7 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2990-00-441-7634 |
| Primary Part Number | 922406C2 |
| Item Name | Muffler,exhaust |
| FSC / FSG | 2990 / 29 — No Item Name Available |
| Manufacturer | Komatsu America Corp. |
| Status | ACTIVE |
| Design Type | DRY |
| Baffle Quantity | 1 |
| Overall Diameter | 12.120 INCHES NOMINAL IN |
| Inlet Connection Type | UNTHREADED SINGLE INLET |
| Muffler Design | STRAIGHT THROUGH W/BAFFLE |
| Outlet Connection Type | UNTHREADED FIRST OUTLET |
| Inlet Outside Diameter | 4.930 INCHES NOMINAL SINGLE INLET IN |
| Inlet Projection Length | 3.625 INCHES NOMINAL SINGLE INLET IN |
| Surface Treatment | CHROMIUM |
| Inlet Inside Diameter | 4.810 INCHES NOMINAL SINGLE INLET IN |
| Outlet Location | LOCATED CENTER OF END OF BODY |
| Outlet Projection Length | 13.800 INCHES NOMINAL FIRST OUTLET IN |
| Material | STEEL LOCATION NOT OTHERWISE SPECIFIED |
| Outlet Outside Diameter | 4.930 INCHES NOMINAL FIRST OUTLET IN |
| Inlet Location | LOCATED CENTER OF END OF BODY |
| Coolant Type | AIR |
| Operating Position | UNIVERSAL |
| Body Shape | ROUND |
| Outlet Inside Diameter | 4.810 INCHES NOMINAL FIRST OUTLET IN |
| Tube Quantity | 1 |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 922406C2 | Komatsu America Corp. (USA) |
| 922406C2 | Dressta North America Ltd (USA) |
| 922406C2 | Navistar Intl Corp Truck Br Ohio Plant (USA) |
| 11843 | Cummins Filtration Inc. (USA) |
| ABT11843 | Ar Bee Corp (USA) |
| ABT11843 | Brighton Cromwell Llc (USA) |
| T-11843 | Cummins Filtration Inc. (USA) |
| 922406C1 | Navistar Intl Corp Melrose Park Engine Plant Location /melrose Park/ (USA) |
NSN 2990-00-441-7634 is a Muffler,exhaust, manufactured by Komatsu America Corp., classified under FSC 2990 (No Item Name Available). Status: active.
NSN 2990-00-441-7634 has 8 cross-referenced part numbers: 922406C2 (Komatsu America Corp.), 922406C2 (Dressta North America Ltd), 922406C2 (Navistar Intl Corp Truck Br Ohio Plant), 11843 (Cummins Filtration Inc.), ABT11843 (Ar Bee Corp) and 3 more.
There are 10 known substitutes for 2990-00-441-7634: 3110-00-156-4699, 5330-00-350-9946, 5950-00-448-0359 and 7 more. Verify interchangeability with system specifications before substitution.
Key specifications for 922406C2: Design Type: DRY; Baffle Quantity: 1; Overall Diameter: 12.120 INCHES NOMINAL IN; Inlet Connection Type: UNTHREADED SINGLE INLET. 21 total characteristics are documented in the Federal Logistics Information System.