The Muffler,exhaust, cataloged under National Stock Number 2990-00-846-2942, is classified within Federal Supply Class 2990 (No Item Name Available) of the Engine Accessories group. The primary manufacturer of record is Arvin Industries Inc. Government technical data includes 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 14 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 | 2990-00-846-2942 |
| Primary Part Number | 1551 |
| Item Name | Muffler,exhaust |
| FSC / FSG | 2990 / 29 — No Item Name Available |
| Manufacturer | Arvin Industries Inc |
| Status | CANCELLED |
| Outlet Outside Diameter | 1.750 INCHES NOMINAL FIRST OUTLET IN |
| Muffler Design | BAFFLE |
| Coolant Type | AIR |
| Inlet Projection Length | 2.750 INCHES NOMINAL SINGLE INLET IN |
| Material | STEEL LOCATION NOT OTHERWISE SPECIFIED |
| Body Shape | ROUND |
| Operating Position | HORIZONTAL |
| Inlet Connection Type | UNTHREADED SINGLE INLET |
| Outlet Connection Type | UNTHREADED FIRST OUTLET |
| Inlet Location | OFFSET FROM CENTER OF END OF BODY |
| Overall Diameter | 6.250 INCHES NOMINAL IN |
| Inlet Inside Diameter | 2.250 INCHES NOMINAL SINGLE INLET IN |
| Surface Treatment | ALUMINUM |
| Outlet Projection Length | 2.750 INCHES NOMINAL FIRST OUTLET IN |
| Outlet Location | OFFSET FROM CENTER OF END OF BODY |
| Inlet Outside Diameter | 2.375 INCHES NOMINAL SINGLE INLET IN |
| Outlet Inside Diameter | 1.625 INCHES NOMINAL FIRST OUTLET IN |
| Design Type | DRY |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 21339 | Walker Mfg Co (USA) |
| 1551 PRIMARY | Arvin Industries Inc (USA) |
| C4AZ5230T | Ford Motor Co Ford Parts and Service Div Government Part Sales (USA) |
| C4AZ5230 | Ford Motor Co Ford Parts and Service Div Government Part Sales (USA) |
| 57M | International Parts Corp Div of Midas-International Corp (USA) |
| C4AZ5230T | Ford Motor Company (USA) |
| C4AZ5230C | Ford Motor Co Ford Parts and Service Div Government Part Sales (USA) |
| 893 | Haviland Arnold Co (USA) |
| 476 PRIMARY | Merit Industries Inc (USA) |
| 1344 | Walker Mfg Co (USA) |
| 21399 PRIMARY | Walker Mfg Co (USA) |
| MC35 PRIMARY | Maremont Corp (USA) |
| 814 | Ap Parts Co Industrial Sales Div (USA) |
| 887 | Mahle Aftermarket Inc. Dba Ae Clevite Inc (USA) |
NSN 2990-00-846-2942 is a Muffler,exhaust, manufactured by Arvin Industries Inc, classified under FSC 2990 (No Item Name Available). Status: cancelled.
NSN 2990-00-846-2942 has 14 cross-referenced part numbers: 21339 (Walker Mfg Co), 1551 (Arvin Industries Inc), C4AZ5230T (Ford Motor Co Ford Parts and Service Div Government Part Sales), C4AZ5230 (Ford Motor Co Ford Parts and Service Div Government Part Sales), 57M (International Parts Corp Div of Midas-International Corp) and 9 more.
There are 12 known substitutes for 2990-00-846-2942: 5998-00-003-6115, 3110-00-065-4856, 5110-00-083-0042 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for 1551: Outlet Outside Diameter: 1.750 INCHES NOMINAL FIRST OUTLET IN; Muffler Design: BAFFLE; Coolant Type: AIR; Inlet Projection Length: 2.750 INCHES NOMINAL SINGLE INLET IN. 20 total characteristics are documented in the Federal Logistics Information System.
NSN 2990-00-846-2942 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.