The Muffler,exhaust, cataloged under National Stock Number 2990-01-067-2322, is classified within Federal Supply Class 2990 (Miscellaneous Engine Accessories, Nonaircraft) of the Engine Accessories group. The manufacturer of record is Wisconsin Motors, Llc. Government technical data includes 21 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2990-01-067-2322 |
| Primary Part Number | WD-86 |
| Item Name | Muffler,exhaust |
| FSC / FSG | 2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft |
| Manufacturer | Wisconsin Motors, Llc |
| Status | ACTIVE |
| Operating Position | VERTICAL |
| Inlet Location | CENTRALLY LOCATED IN END SECTION OF BODY |
| Design Type | JACKETED |
| Overall Diameter | 4.625 INCHES NOMINAL IN |
| Outlet Inside Diameter | 4.625 INCHES NOMINAL FIRST OUTLET IN |
| Inlet Thread Location | EXTERNAL SINGLE INLET |
| Inlet Projection Length | 1.000 INCHES NOMINAL SINGLE INLET IN |
| Baffle Quantity | 1 |
| Muffler Design | BAFFLE |
| Outlet Outside Diameter | 1.750 INCHES NOMINAL FIRST OUTLET IN |
| Tube Quantity | 1 |
| Inlet Connection Type | THREADED SINGLE INLET |
| Thread Direction | RIGHT-HAND SINGLE INLET |
| Body Shape | ROUND |
| Inlet Thread Size | 1-1/4-11-1/2 SINGLE INLET |
| Inlet Thread Series Designator | NPT SINGLE INLET |
| Surface Treatment | ALUMINUM |
| Material | STEEL LOCATION NOT OTHERWISE SPECIFIED |
| Outlet Projection Length | 2.500 INCHES NOMINAL FIRST OUTLET IN |
| Outlet Connection Type | UNTHREADED FIRST OUTLET |
| Outlet Location | CENTRALLY LOCATED IN END SECTION OF BODY OPPOSITE INLET |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| WD-86 PRIMARY | Wisconsin Motors, Llc (USA) |
NSN 2990-01-067-2322 is a Muffler,exhaust, manufactured by Wisconsin Motors, Llc, classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.
NSN 2990-01-067-2322 has 1 manufacturer part number on file: WD-86 (Wisconsin Motors, Llc).
Key specifications for WD-86: Operating Position: VERTICAL; Inlet Location: CENTRALLY LOCATED IN END SECTION OF BODY; Design Type: JACKETED; Overall Diameter: 4.625 INCHES NOMINAL IN. 21 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.