The Muffler,exhaust, cataloged under National Stock Number 2990-00-678-9815, is classified within Federal Supply Class 2990 (No Item Name Available) of the Engine Accessories group. The primary manufacturer of record is Kurz & Root Generator Company, Llc. Government technical data includes 22 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2990-00-678-9815 |
| Primary Part Number | 157E10-2169 |
| Item Name | Muffler,exhaust |
| FSC / FSG | 2990 / 29 — No Item Name Available |
| Manufacturer | Kurz & Root Generator Company, Llc |
| Status | ACTIVE |
| Body Shape | ROUND |
| Inlet Location | CENTRALLY LOCATED INSIDE 4-1/4 IN. PORM 1/16 FROM END IN |
| Outlet Outside Diameter | 3.128 INCHES MINIMUM AND 3.148 INCHES MAXIMUM FIRST OUTLET IN |
| Outlet Location | CENTRALLY LOCATED IN END SECTION OF BODY |
| Inlet Flange Mounting Hole Diameter | 0.563 INCHES NOMINAL SINGLE INLET IN |
| Muffler Design | BAFFLE |
| Coolant Type | AIR |
| Overall Diameter | 7.000 INCHES NOMINAL IN |
| Material | STEEL LOCATION NOT OTHERWISE SPECIFIED |
| Inlet Flange Shape | SQUARE SINGLE INLET |
| Outlet Inside Diameter | 3.005 INCHES MINIMUM AND 3.025 INCHES MAXIMUM FIRST OUTLET IN |
| Outlet Projection Length | 2.344 INCHES NOMINAL FIRST OUTLET IN |
| Center to Center Distance Between Mounting Holes | 4-1/4 IN. C TO C DIM. OF STUDS SINGLE INLET IN |
| Outlet Connection Type | UNTHREADED FIRST OUTLET |
| Outlet Integral Tail Pipe Length | 19.313 INCHES MINIMUM AND 19.438 INCHES MAXIMUM FIRST OUTLET IN |
| Baffle Quantity | 2 |
| FSC Application Data | 1. DIESEL ENGINE,GENERATOR SET |
| Design Type | DRY |
| Tube Quantity | 2 |
| Operating Position | HORIZONTAL |
| Inlet Flange Mounting Provision and Quantity | 4 HOLES SINGLE INLET |
| Inlet Connection Type | FLANGE SINGLE INLET |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 157E10-2169 PRIMARY | Kurz & Root Generator Company, Llc (USA) |
| 25218 | Napco International Llc Dba Napco International Inc (USA) |
| M70030 PRIMARY | Donaldson Company, Inc. (USA) |
NSN 2990-00-678-9815 is a Muffler,exhaust, manufactured by Kurz & Root Generator Company, Llc, classified under FSC 2990 (No Item Name Available). Status: active.
NSN 2990-00-678-9815 has 3 cross-referenced part numbers: 157E10-2169 (Kurz & Root Generator Company, Llc), 25218 (Napco International Llc Dba Napco International Inc), M70030 (Donaldson Company, Inc.).
There are 4 known substitutes for 2990-00-678-9815: 3020-00-141-3724, 3020-00-593-8177, 5950-00-647-6852 and 1 more. Verify interchangeability with system specifications before substitution.
Key specifications for 157E10-2169: Body Shape: ROUND; Inlet Location: CENTRALLY LOCATED INSIDE 4-1/4 IN. PORM 1/16 FROM END IN; Outlet Outside Diameter: 3.128 INCHES MINIMUM AND 3.148 INCHES MAXIMUM FIRST OUTLET IN; Outlet Location: CENTRALLY LOCATED IN END SECTION OF BODY. 23 total characteristics are documented in the Federal Logistics Information System.