The Muffler,exhaust, cataloged under National Stock Number 2990-01-025-9931, 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 16 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 6 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 | 2990-01-025-9931 |
| Primary Part Number | 21891 |
| Item Name | Muffler,exhaust |
| FSC / FSG | 2990 / 29 — No Item Name Available |
| Manufacturer | Walker Mfg Co |
| Status | CANCELLED |
| Inlet Location | OFFSET IN END SECTION OF BODY 1.250 IN. C OF INLET TO C OF BODY IN |
| Inlet Inside Diameter | 1.875 INCHES NOMINAL SINGLE INLET IN |
| Outlet Location | OFFSET IN END SECTION OF BODY 1.250 IN. C OF OUTLET TO C OF BODY IN |
| Material | STEEL LOCATION NOT OTHERWISE SPECIFIED |
| Inlet Projection Length | 2.500 INCHES NOMINAL SINGLE INLET IN |
| Surface Treatment | ALUMINUM ALLOY |
| Outlet Projection Length | 2.500 INCHES NOMINAL FIRST OUTLET IN |
| Muffler Design | MULTIPASS |
| Tube Quantity | 3 |
| Outlet Connection Type | UNTHREADED FIRST OUTLET |
| Design Type | JACKETED |
| Overall Diameter | 5.000 INCHES NOMINAL IN |
| Body Shape | ROUND |
| Inlet Connection Type | UNTHREADED SINGLE INLET |
| Outlet Inside Diameter | 1.750 INCHES NOMINAL FIRST OUTLET IN |
| Material | ASBESTOS INSULATION |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| M1347 | Goerlichs (USA) |
| 2922 | Ap Parts Co Industrial Sales Div (USA) |
| 4089194 | Chrysler Corp Service and Parts Opns (USA) |
| 3827418 | Chrysler Corp Hamtramck Assembly (USA) |
| 21891 PRIMARY | Walker Mfg Co (USA) |
| 3827418 | Chrysler Corp Service and Parts Opns (USA) |
| 3827418 | Chrysler Realty Company Llc Dba Daimler Chrysler (USA) |
NSN 2990-01-025-9931 is a Muffler,exhaust, manufactured by Walker Mfg Co, classified under FSC 2990 (No Item Name Available). Status: cancelled.
NSN 2990-01-025-9931 has 7 cross-referenced part numbers: M1347 (Goerlichs), 2922 (Ap Parts Co Industrial Sales Div), 4089194 (Chrysler Corp Service and Parts Opns), 3827418 (Chrysler Corp Hamtramck Assembly), 21891 (Walker Mfg Co) and 2 more.
There are 12 known substitutes for 2990-01-025-9931: 5365-00-143-5647, 3110-00-156-1917, 5930-00-796-0309 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for 21891: Inlet Location: OFFSET IN END SECTION OF BODY 1.250 IN. C OF INLET TO C OF BODY IN; Inlet Inside Diameter: 1.875 INCHES NOMINAL SINGLE INLET IN; Outlet Location: OFFSET IN END SECTION OF BODY 1.250 IN. C OF OUTLET TO C OF BODY IN; Overall Length: 31.000 INCHES NOMINAL IN. 17 total characteristics are documented in the Federal Logistics Information System.
NSN 2990-01-025-9931 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.