The Muffler,exhaust, cataloged under National Stock Number 2990-00-773-2154, is classified within Federal Supply Class 2990 (No Item Name Available) of the Engine Accessories group. The primary manufacturer of record is Caterpillar Inc Div Caterpillar Defense. Government technical data includes 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 2990-00-773-2154 |
| Primary Part Number | 054359 |
| Item Name | Muffler,exhaust |
| FSC / FSG | 2990 / 29 — No Item Name Available |
| Manufacturer | Caterpillar Inc Div Caterpillar Defense |
| Status | CANCELLED |
| Inlet Connection Type | UNTHREADED SINGLE INLET |
| Body Shape | ROUND |
| Design Type | DRY |
| Coolant Type | AIR |
| Overall Diameter | 5.625 INCHES NOMINAL IN |
| Tube Quantity | 2 |
| Muffler Design | MULTIPASS |
| Operating Position | HORIZONTAL |
| Outlet Location | LOCATED IN END SECTION OF BODY OPPOSITE INLET |
| Outlet Connection Type | UNTHREADED FIRST OUTLET |
| Outlet Outside Diameter | 1.607 INCHES NOMINAL FIRST OUTLET IN |
| Inlet Location | LOCATED IN END SECTION OF BODY |
| Inlet Inside Diameter | 1.900 INCHES NOMINAL SINGLE INLET IN |
| Inlet Outside Diameter | 1.996 INCHES NOMINAL SINGLE INLET IN |
| Inlet Projection Length | 2.000 INCHES NOMINAL SINGLE INLET IN |
| Outlet Projection Length | 4.000 INCHES NOMINAL FIRST OUTLET IN |
| Material | STEEL LOCATION NOT OTHERWISE SPECIFIED |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 054359 PRIMARY | Caterpillar Inc Div Caterpillar Defense (USA) |
| 6170 | Cummins Filtration Inc. (USA) |
| 54359 PRIMARY | Mitsubishi Caterpillar Forklift America, Inc (USA) |
| ABT6170 | Brighton Cromwell Llc (USA) |
| ABT6170 | Ar Bee Corp (USA) |
| T-6170 PRIMARY | Cummins Filtration Inc. (USA) |
NSN 2990-00-773-2154 is a Muffler,exhaust, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 2990 (No Item Name Available). Status: cancelled.
NSN 2990-00-773-2154 has 6 cross-referenced part numbers: 054359 (Caterpillar Inc Div Caterpillar Defense), 6170 (Cummins Filtration Inc.), 54359 (Mitsubishi Caterpillar Forklift America, Inc), ABT6170 (Brighton Cromwell Llc), ABT6170 (Ar Bee Corp) and 1 more.
There are 7 known substitutes for 2990-00-773-2154: 5940-00-204-9414, 5950-00-621-9657, 3405-01-294-0499 and 4 more. Verify interchangeability with system specifications before substitution.
Key specifications for 054359: Inlet Connection Type: UNTHREADED SINGLE INLET; Body Shape: ROUND; Design Type: DRY; Coolant Type: AIR. 18 total characteristics are documented in the Federal Logistics Information System.
NSN 2990-00-773-2154 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.