The Muffler,exhaust, cataloged under National Stock Number 2990-00-135-4435, 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 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 11 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: Active.
| Parameter | Value |
|---|---|
| NSN | 2990-00-135-4435 |
| Primary Part Number | 21457 |
| Item Name | Muffler,exhaust |
| FSC / FSG | 2990 / 29 — No Item Name Available |
| Manufacturer | Walker Mfg Co |
| Status | ACTIVE |
| Material | ASBESTOS INSULATION |
| Surface Treatment | ALUMINUM |
| Outlet Location | CENTRALLY LOCATED ON END OF BODY |
| Tube Quantity | 3 |
| Inlet Projection Length | 1.906 INCHES NOMINAL SINGLE INLET IN |
| Inlet Inside Diameter | 1.875 INCHES NOMINAL SINGLE INLET IN |
| Muffler Design | MULTIPASS |
| Outlet Inside Diameter | 1.750 INCHES NOMINAL FIRST OUTLET IN |
| Outlet Projection Length | 1.906 INCHES NOMINAL FIRST OUTLET IN |
| Inlet Location | OFFSET LOCATED ON END OF BODY |
| Operating Position | HORIZONTAL |
| Design Type | JACKETED |
| Material | STEEL LOCATION NOT OTHERWISE SPECIFIED |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 958 | Mahle Aftermarket Inc. Dba Ae Clevite Inc (USA) |
| 2781263 | Chrysler Corp Service and Parts Opns (USA) |
| 2501 | Ap Parts Co Industrial Sales Div (USA) |
| 2264 | Harvard Industries (USA) |
| 21457 PRIMARY | Walker Mfg Co (USA) |
| PL54 PRIMARY | Maremont Corp (USA) |
| 5713 | Walker Mfg Co (USA) |
| 1043 | Haviland Arnold Co (USA) |
| 1216 PRIMARY | Arvin Industries Inc (USA) |
| 2781263 | Chrysler Realty Company Llc Dba Daimler Chrysler (USA) |
| 41D | International Parts Corp Div of Midas-International Corp (USA) |
NSN 2990-00-135-4435 is a Muffler,exhaust, manufactured by Walker Mfg Co, classified under FSC 2990 (No Item Name Available). Status: active.
NSN 2990-00-135-4435 has 11 cross-referenced part numbers: 958 (Mahle Aftermarket Inc. Dba Ae Clevite Inc), 2781263 (Chrysler Corp Service and Parts Opns), 2501 (Ap Parts Co Industrial Sales Div), 2264 (Harvard Industries), 21457 (Walker Mfg Co) and 6 more.
There are 12 known substitutes for 2990-00-135-4435: 5930-00-091-3276, 2805-00-118-3567, 6240-00-132-5313 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for 21457: Material: ASBESTOS INSULATION; Surface Treatment: ALUMINUM; Outlet Location: CENTRALLY LOCATED ON END OF BODY; Tube Quantity: 3. 16 total characteristics are documented in the Federal Logistics Information System.