The Muffler,exhaust, cataloged under National Stock Number 2990-01-652-7623, is classified within Federal Supply Class 2990 (Miscellaneous Engine Accessories, Nonaircraft) of the Engine Accessories group. The manufacturer of record is Great Lakes Sound & Vibration Inc Div Main Office. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Muffler,exhaust |
| FSC / FSG | 2990 — Miscellaneous Engine Accessories, Nonaircraft (FSG 29) |
| Manufacturers | Great Lakes Sound & Vibration Inc Div Main Office (CAGE 3B6V7) |
| Parameter | Value |
|---|---|
| NSN | 2990-01-652-7623 |
| Primary Part Number | 100-6777 |
| Item Name | Muffler,exhaust |
| FSC / FSG | 2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft |
| Manufacturer | Great Lakes Sound & Vibration Inc Div Main Office |
| Status | ACTIVE |
| 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 |
|---|---|
| 100-6777 PRIMARY | Great Lakes Sound & Vibration Inc Div Main Office (USA) |
| Reference | Meaning |
|---|---|
| 201570N | 5/9 Secondary reference Cummins Inc. |
| R0093541 | D/9 Drawing number reference only Denel Vehicle Systems |
| R0093541-0301 | 5/9 Secondary reference Denel Vehicle Systems |
| 12664978 | 7/2 Vendor item drawing reference U S Army Tank Automotive Command Amsta-Im-Mm |
| R0093541 | 5/9 Secondary reference General Dynamics Land Systems Canadacorp |
NSN 2990-01-652-7623 is a Muffler,exhaust, manufactured by Great Lakes Sound & Vibration Inc Div Main Office, classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.
NSN 2990-01-652-7623 has 1 manufacturer part number on file: 100-6777 (Great Lakes Sound & Vibration Inc Div Main Office).
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.