The Muffler,exhaust, cataloged under National Stock Number 2990-00-364-6781, 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 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 8 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 2990-00-364-6781 |
| Primary Part Number | T-4728 |
| Item Name | Muffler,exhaust |
| FSC / FSG | 2990 / 29 — No Item Name Available |
| Manufacturer | Cummins Filtration Inc. |
| Status | CANCELLED |
| Body Shape | ROUND |
| Operating Position | HORIZONTAL |
| Nonconnection Outlet Location | IN END SECTION OF BODYOPPOSITE INLET END |
| Inlet Thread Series Designator | NPT SINGLE INLET |
| Material | STEEL LOCATION NOT OTHERWISE SPECIFIED |
| Overall Diameter | 3.250 INCHES NOMINAL IN |
| Inlet Thread Location | INTERNAL SINGLE INLET |
| Inlet Location | CENTRALLY LOCATED IN END SECTION OF BODY |
| Inlet Connection Type | THREADED SINGLE INLET |
| Inlet Thread Size | 3/4-14 SINGLE INLET |
| Tube Quantity | 1 |
| Nonconnection Outlet Size | 0.125 IN. DIA IN |
| Nonconnection Outlet Type and Quantity | 14 PERFORATED |
| Design Type | DRY |
| Surface Treatment | PAINT |
| Coolant Type | AIR |
| Muffler Design | STRAIGHT THROUGH |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 4728 | Cummins Filtration Inc. (USA) |
| 155-29 | Cummins Power Generation Inc. (USA) |
| 8930 | Cummins Power Generation Inc. (USA) |
| 155-143 | Cummins Power Generation Inc. (USA) |
| 155A143 | Cummins Power Generation Inc. (USA) |
| 155-0488 | Cummins Power Generation Inc. (USA) |
| T-4728 PRIMARY | Cummins Filtration Inc. (USA) |
| 155B29 | Cummins Power Generation Inc. (USA) |
NSN 2990-00-364-6781 is a Muffler,exhaust, manufactured by Cummins Filtration Inc., classified under FSC 2990 (No Item Name Available). Status: cancelled.
NSN 2990-00-364-6781 has 8 cross-referenced part numbers: 4728 (Cummins Filtration Inc.), 155-29 (Cummins Power Generation Inc.), 8930 (Cummins Power Generation Inc.), 155-143 (Cummins Power Generation Inc.), 155A143 (Cummins Power Generation Inc.) and 3 more.
There are 12 known substitutes for 2990-00-364-6781: 6240-00-099-6894, 5110-00-253-3181, 5977-00-265-2911 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for T-4728: Body Shape: ROUND; Operating Position: HORIZONTAL; Nonconnection Outlet Location: IN END SECTION OF BODYOPPOSITE INLET END; Inlet Thread Series Designator: NPT SINGLE INLET. 18 total characteristics are documented in the Federal Logistics Information System.
NSN 2990-00-364-6781 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.