The Muffler,exhaust, cataloged under National Stock Number 2990-00-947-6103, is classified within Federal Supply Class 2990 (No Item Name Available) of the Engine Accessories group. The primary manufacturer of record is Cummins Filtration Inc.. Government technical data includes 22 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 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 | 2990-00-947-6103 |
| Primary Part Number | 6666 |
| Item Name | Muffler,exhaust |
| FSC / FSG | 2990 / 29 — No Item Name Available |
| Manufacturer | Cummins Filtration Inc. |
| Status | ACTIVE |
| Design Type | DRY |
| Overall Diameter | 3.250 INCHES NOMINAL IN |
| Inlet Connection Type | UNTHREADED SINGLE INLET |
| Material | STEEL LOCATION NOT OTHERWISE SPECIFIED |
| Outlet Location | ON SIDE OF BODY 1.375 IN. C OF OUTLET TO END OF BODY OPPOSITE INLET BODY END IN |
| Outlet Projection Length | 1.250 INCHES NOMINAL FIRST OUTLET IN |
| Inlet Projection Length | 1.250 INCHES NOMINAL SINGLE INLET IN |
| Thread Location | EXTERNAL FIRST OUTLET |
| Coolant Type | AIR |
| Surface Treatment | PAINT |
| Baffle Quantity | 3 |
| Outlet Thread Size | 1-11-1/2 FIRST OUTLET |
| Outlet Connection Type | THREADED FIRST OUTLET |
| Inlet Outside Diameter | 1.188 INCHES NOMINAL SINGLE INLET IN |
| Outlet Thread Direction | RIGHT-HAND FIRST OUTLET |
| Inlet Location | ON SIDE OF BODY 1.375 IN. VERTICAL C OF INLET TO END OF BODY IN |
| Muffler Design | BAFFLE |
| Operating Position | VERTICAL |
| Inlet Inside Diameter | 1.062 INCHES NOMINAL SINGLE INLET IN |
| FSC Application Data | ENGINE,NONAIRCRAFT |
| Tube Quantity | 3 |
| Body Shape | ROUND |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| ABT6666 | Ar Bee Corp (USA) |
| 6666 PRIMARY | Cummins Filtration Inc. (USA) |
| 155D692 | Cummins Power Generation Inc. (USA) |
| ABT6666 | Brighton Cromwell Llc (USA) |
| T-6666 | Cummins Filtration Inc. (USA) |
| 155-0692 | Cummins Power Generation Inc. (USA) |
| 155-692 | Cummins Power Generation Inc. (USA) |
NSN 2990-00-947-6103 is a Muffler,exhaust, manufactured by Cummins Filtration Inc., classified under FSC 2990 (No Item Name Available). Status: active.
NSN 2990-00-947-6103 has 7 cross-referenced part numbers: ABT6666 (Ar Bee Corp), 6666 (Cummins Filtration Inc.), 155D692 (Cummins Power Generation Inc.), ABT6666 (Brighton Cromwell Llc), T-6666 (Cummins Filtration Inc.) and 2 more.
There are 12 known substitutes for 2990-00-947-6103: 4820-00-146-8971, 4510-00-255-2826, 5210-00-357-9434 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for 6666: Design Type: DRY; Overall Diameter: 3.250 INCHES NOMINAL IN; Inlet Connection Type: UNTHREADED SINGLE INLET; Material: STEEL LOCATION NOT OTHERWISE SPECIFIED. 24 total characteristics are documented in the Federal Logistics Information System.