The Muffler,exhaust, cataloged under National Stock Number 2990-00-675-1486, is classified within Federal Supply Class 2990 (No Item Name Available) of the Engine Accessories group. The primary manufacturer of record is Walker Mfg Co. Government technical data includes 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 8 commercial cross-references from 7 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2990-00-675-1486 |
| Primary Part Number | 21012 |
| Item Name | Muffler,exhaust |
| FSC / FSG | 2990 / 29 — No Item Name Available |
| Manufacturer | Walker Mfg Co |
| Status | ACTIVE |
| Overall Diameter | 6.000 INCHES NOMINAL IN |
| Muffler Design | MULTIPASS |
| Tube Quantity | 3 |
| Outlet Inside Diameter | 1.500 INCHES NOMINAL FIRST OUTLET IN |
| Inlet Inside Diameter | 1.625 INCHES NOMINAL SINGLE INLET IN |
| Surface Treatment | ALUMINUM ALLOY |
| Outlet Location | LOCATED ON RIGHT-HAND SID OF END SECTION |
| Inlet Projection Length | 3.813 INCHES NOMINAL SINGLE INLET IN |
| Outlet Connection Type | UNTHREADED FIRST OUTLET |
| Material | ASBESTOS INSULATION |
| Inlet Location | CENTRALLY LOCATED IN END SECTION |
| Material | STEEL LOCATION NOT OTHERWISE SPECIFIED |
| Outlet Projection Length | 3.813 INCHES NOMINAL FIRST OUTLET IN |
| Design Type | JACKETED |
| Baffle Quantity | 6 |
| Body Shape | ROUND |
| Inlet Connection Type | UNTHREADED SINGLE INLET |
| Operating Position | HORIZONTAL |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 21012 PRIMARY | Walker Mfg Co (USA) |
| 174M | International Parts Corp Div of Midas-International Corp (USA) |
| 4878 | Harvard Industries (USA) |
| 343 | Mahle Aftermarket Inc. Dba Ae Clevite Inc (USA) |
| 1130 | Haviland Arnold Co (USA) |
| 1876 PRIMARY | Arvin Industries Inc (USA) |
| 763 PRIMARY | Merit Industries Inc (USA) |
| 573 | Walker Mfg Co (USA) |
NSN 2990-00-675-1486 is a Muffler,exhaust, manufactured by Walker Mfg Co, classified under FSC 2990 (No Item Name Available). Status: active.
NSN 2990-00-675-1486 has 8 cross-referenced part numbers: 21012 (Walker Mfg Co), 174M (International Parts Corp Div of Midas-International Corp), 4878 (Harvard Industries), 343 (Mahle Aftermarket Inc. Dba Ae Clevite Inc), 1130 (Haviland Arnold Co) and 3 more.
There are 12 known substitutes for 2990-00-675-1486: 5977-00-033-5752, 5315-00-058-6093, 3110-00-100-4185 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for 21012: Overall Diameter: 6.000 INCHES NOMINAL IN; Muffler Design: MULTIPASS; Tube Quantity: 3; Outlet Inside Diameter: 1.500 INCHES NOMINAL FIRST OUTLET IN. 19 total characteristics are documented in the Federal Logistics Information System.