The Muffler,exhaust, cataloged under National Stock Number 2990-00-846-0732, is classified within Federal Supply Class 2990 (No Item Name Available) of the Engine Accessories group. The primary manufacturer of record is Maremont Corp. Government technical data includes 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 13 commercial cross-references from 10 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 | 2990-00-846-0732 |
| Primary Part Number | FD78 |
| Item Name | Muffler,exhaust |
| FSC / FSG | 2990 / 29 — No Item Name Available |
| Manufacturer | Maremont Corp |
| Status | CANCELLED |
| Overall Diameter | 5.250 INCHES NOMINAL IN |
| Operating Position | HORIZONTAL |
| Inlet Outside Diameter | 1.875 INCHES NOMINAL SINGLE INLET IN |
| Inlet Location | OFFSET FROM CENTER IN BOTTOM |
| Surface Treatment | ALUMINUM |
| Inlet Connection Type | UNTHREADED SINGLE INLET |
| Coolant Type | AIR |
| Outlet Projection Length | 1.875 INCHES NOMINAL FIRST OUTLET IN |
| Inlet Projection Length | 1.875 INCHES NOMINAL SINGLE INLET IN |
| Inlet Inside Diameter | 1.750 INCHES NOMINAL SINGLE INLET IN |
| Outlet Location | OFFSET FROM CENTER IN TOP |
| Body Shape | ROUND |
| Outlet Inside Diameter | 1.375 INCHES NOMINAL FIRST OUTLET IN |
| Design Type | DRY |
| Outlet Connection Type | UNTHREADED FIRST OUTLET |
| Muffler Design | STRAIGHT THROUGH |
| Material | STEEL LOCATION NOT OTHERWISE SPECIFIED |
| Outlet Outside Diameter | 1.500 INCHES NOMINAL FIRST OUTLET IN |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| FD78 PRIMARY | Maremont Corp (USA) |
| MU723 | Mahle Aftermarket Inc. Dba Ae Clevite Inc (USA) |
| 763 | Haviland Arnold Co (USA) |
| 1030 PRIMARY | Arvin Industries Inc (USA) |
| C1DD5230B | Ford Motor Co Ford Parts and Service Div Government Part Sales (USA) |
| 53B | International Parts Corp Div of Midas-International Corp (USA) |
| 666 | Ap Parts Co Industrial Sales Div (USA) |
| C1DD5230C | Ford Motor Co Ford Parts and Service Div Government Part Sales (USA) |
| 416 PRIMARY | Merit Industries Inc (USA) |
| 21255 PRIMARY | Walker Mfg Co (USA) |
| C1DD5230D | Ford Motor Co Ford Parts and Service Div Government Part Sales (USA) |
| C1DD5230C | Ford Motor Company (USA) |
| C1DD5230B | Ford Motor Company (USA) |
NSN 2990-00-846-0732 is a Muffler,exhaust, manufactured by Maremont Corp, classified under FSC 2990 (No Item Name Available). Status: cancelled.
NSN 2990-00-846-0732 has 13 cross-referenced part numbers: FD78 (Maremont Corp), MU723 (Mahle Aftermarket Inc. Dba Ae Clevite Inc), 763 (Haviland Arnold Co), 1030 (Arvin Industries Inc), C1DD5230B (Ford Motor Co Ford Parts and Service Div Government Part Sales) and 8 more.
There are 12 known substitutes for 2990-00-846-0732: 5935-00-135-8708, 4310-00-147-3893, 5940-00-171-0431 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for FD78: Overall Diameter: 5.250 INCHES NOMINAL IN; Operating Position: HORIZONTAL; Inlet Outside Diameter: 1.875 INCHES NOMINAL SINGLE INLET IN; Inlet Location: OFFSET FROM CENTER IN BOTTOM. 19 total characteristics are documented in the Federal Logistics Information System.
NSN 2990-00-846-0732 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.