The Muffler,exhaust, cataloged under National Stock Number 2990-00-008-7405, 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 15 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. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2990-00-008-7405 |
| Primary Part Number | T-11643 |
| Item Name | Muffler,exhaust |
| FSC / FSG | 2990 / 29 — No Item Name Available |
| Manufacturer | Cummins Filtration Inc. |
| Status | ACTIVE |
| Outlet Projection Length | 4.700 INCHES NOMINAL FIRST OUTLET IN |
| Inlet Location | LOCATED ON BOTTOM SIDE OF BODY,3.250 IN FROM CENTER OF TUBE TO BODY END IN |
| Outlet Outside Diameter | 3.835 INCHES MINIMUM AND 3.865 INCHES MAXIMUM FIRST OUTLET IN |
| Outlet Inside Diameter | 3.713 INCHES MINIMUM AND 3.743 INCHES MAXIMUM FIRST OUTLET IN |
| Inlet Projection Length | 3.300 INCHES NOMINAL SINGLE INLET IN |
| Coolant Type | AIR |
| Muffler Design | BAFFLE |
| Design Type | DRY |
| Outlet Location | LOCATED IN END SECTION OF BODY,4.400 IN. BELOW HORIZONTAL CENTER LINE TO CENTER OF TUBE IN |
| Operating Position | HORIZONTAL |
| Baffle Quantity | 2 |
| Tube Quantity | 2 |
| Inlet Outside Diameter | 4.127 INCHES MINIMUM AND 4.157 INCHES MAXIMUM SINGLE INLET IN |
| Inlet Inside Diameter | 4.005 INCHES MINIMUM AND 4.035 INCHES MAXIMUM SINGLE INLET IN |
| Material | STEEL LOCATION NOT OTHERWISE SPECIFIED |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
NSN 2990-00-008-7405 is a Muffler,exhaust, manufactured by Cummins Filtration Inc., classified under FSC 2990 (No Item Name Available). Status: active.
NSN 2990-00-008-7405 has 5 cross-referenced part numbers: 2ME361P4 (Mack Trucks, Inc. Dba Macungie Operations Div Lehigh Valley Operations), ABT11643 (Brighton Cromwell Llc), T-11643 (Cummins Filtration Inc.), 11643 (Cummins Filtration Inc.), ABT11643 (Ar Bee Corp).
There are 5 known substitutes for 2990-00-008-7405: 6610-00-070-0011, 2910-00-336-8032, 5340-00-657-9958 and 2 more. Verify interchangeability with system specifications before substitution.
Key specifications for T-11643: Overall Length: 15.000 INCHES NOMINAL IN; Outlet Projection Length: 4.700 INCHES NOMINAL FIRST OUTLET IN; Inlet Location: LOCATED ON BOTTOM SIDE OF BODY,3.250 IN FROM CENTER OF TUBE TO BODY END IN; Outlet Outside Diameter: 3.835 INCHES MINIMUM AND 3.865 INCHES MAXIMUM FIRST OUTLET IN. 18 total characteristics are documented in the Federal Logistics Information System.