The Guard,muffler-Exhaust Pipe,nonai, cataloged under National Stock Number 2990-01-567-7158, is classified within Federal Supply Class 2990 (Miscellaneous Engine Accessories, Nonaircraft) of the Engine Accessories group. The manufacturer of record is Oshkosh Defense Llc. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2990-01-567-7158 |
| Primary Part Number | 3722973 |
| Item Name | Guard,muffler-Exhaust Pipe,nonai |
| FSC / FSG | 2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft |
| Manufacturer | Oshkosh Defense Llc |
| Status | ACTIVE |
| Mounting Method | UNTHREADED MOUNTING HOLES |
| 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 |
|---|---|
| 3722973 PRIMARY | Oshkosh Defense Llc (USA) |
| Reference | Meaning |
|---|---|
| 3722973 | 5/9 Secondary reference Oshkosh Corp |
NSN 2990-01-567-7158 is a Guard,muffler-Exhaust Pipe,nonai, manufactured by Oshkosh Defense Llc, classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.
NSN 2990-01-567-7158 has 1 manufacturer part number on file: 3722973 (Oshkosh Defense Llc).
Key specifications for 3722973: Mounting Method: UNTHREADED MOUNTING HOLES; Overall Length: 30.250 INCHES NOMINAL IN; Overall Width: 23.140 INCHES NOMINAL IN; Special Features: CORNERS ARE ROUNDED WITH A .500 RADIUS;GUARD HAS 72 CUT OUT SLOTTED HOLES. 1 specification is 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.