The Muffler,exhaust, cataloged under National Stock Number 2990-00-258-6486, 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 4 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 11 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 | 2990-00-258-6486 |
| Primary Part Number | 21143 |
| Item Name | Muffler,exhaust |
| FSC / FSG | 2990 / 29 — No Item Name Available |
| Manufacturer | Walker Mfg Co |
| Status | ACTIVE |
| Operating Position | HORIZONTAL |
| Inlet Connection Type | UNTHREADED SINGLE INLET |
| Inlet Outside Diameter | 2.250 INCHES NOMINAL SINGLE INLET IN |
| Inlet Location | FRONT |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| B9A5230F | Ford Motor Company (USA) |
| 5251 | Harvard Industries (USA) |
| MU688 | Mahle Aftermarket Inc. Dba Ae Clevite Inc (USA) |
| B8A5230B | Ford Motor Co Ford Parts and Service Div Government Part Sales (USA) |
| B9A5230F | Ford Motor Co Ford Parts and Service Div Government Part Sales (USA) |
| 21143 PRIMARY | Walker Mfg Co (USA) |
| B8A5230B | Ford Motor Company (USA) |
| B8A5230C | Ford Motor Company (USA) |
| 411 PRIMARY | Merit Industries Inc (USA) |
| 627 | Ap Parts Co Industrial Sales Div (USA) |
| B8A5230C | Ford Motor Co Ford Parts and Service Div Government Part Sales (USA) |
NSN 2990-00-258-6486 is a Muffler,exhaust, manufactured by Walker Mfg Co, classified under FSC 2990 (No Item Name Available). Status: active.
NSN 2990-00-258-6486 has 11 cross-referenced part numbers: B9A5230F (Ford Motor Company), 5251 (Harvard Industries), MU688 (Mahle Aftermarket Inc. Dba Ae Clevite Inc), B8A5230B (Ford Motor Co Ford Parts and Service Div Government Part Sales), B9A5230F (Ford Motor Co Ford Parts and Service Div Government Part Sales) and 6 more.
There are 12 known substitutes for 2990-00-258-6486: 5310-00-216-3531, 3120-00-359-0192, 5950-00-456-8903 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for 21143: Operating Position: HORIZONTAL; Inlet Connection Type: UNTHREADED SINGLE INLET; Overall Height: 4.000 INCHES NOMINAL IN; Inlet Outside Diameter: 2.250 INCHES NOMINAL SINGLE INLET IN. 7 total characteristics are documented in the Federal Logistics Information System.