The Muffler,exhaust, cataloged under National Stock Number 2990-01-108-5703, is classified within Federal Supply Class 2990 (Miscellaneous Engine Accessories, Nonaircraft) of the Engine Accessories group. The manufacturer of record is Wheeler Fleet Solutions, Co.. Government technical data includes 13 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2990-01-108-5703 |
| Primary Part Number | 836-0901A7112-2 |
| Item Name | Muffler,exhaust |
| FSC / FSG | 2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft |
| Manufacturer | Wheeler Fleet Solutions, Co. |
| Status | ACTIVE |
| Operating Position | UNIVERSAL |
| Inlet Location | CENTRALLY LOCATED ON BOTTOM END SECTION OF BODY |
| Design Type | DRY |
| Outlet Inside Diameter | 4.000 INCHES NOMINAL FIRST OUTLET IN |
| Inlet Projection Length | 3.250 INCHES NOMINAL SINGLE INLET IN |
| Inlet Connection Type | UNTHREADED SINGLE INLET |
| Body Shape | OVAL |
| Surface Treatment | PAINT |
| Inlet Inside Diameter | 4.000 INCHES NOMINAL SINGLE INLET IN |
| Material | STEEL LOCATION NOT OTHERWISE SPECIFIED |
| Outlet Projection Length | 3.250 INCHES NOMINAL FIRST OUTLET IN |
| Outlet Connection Type | UNTHREADED FIRST OUTLET |
| Outlet Location | CENTRALLY LOCATED ON TOP END SECTION OF BODY |
| 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 |
|---|---|
| 836-0901A7112-2 | Wheeler Fleet Solutions, Co. (USA) |
| Reference | Meaning |
|---|---|
| 836-0901A7112 | D/9 Drawing number reference only Wheeler Fleet Solutions, Co. |
| 0901A7112 | D/9 Drawing number reference only Maxim Industries Inc |
| 94007 | 5/9 Secondary reference Riker Products |
| 0901A7112-2 | 3/9 Design control — primary reference Maxim Industries Inc |
NSN 2990-01-108-5703 is a Muffler,exhaust, manufactured by Wheeler Fleet Solutions, Co., classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.
NSN 2990-01-108-5703 has 1 manufacturer part number on file: 836-0901A7112-2 (Wheeler Fleet Solutions, Co.).
3 possible matches (shared part number, not a government interchangeability claim): 4920-01-299-9631, 5935-01-447-0863, 5305-01-656-4115. Verify interchangeability with system specifications before substitution.
Key specifications for 836-0901A7112-2: Operating Position: UNIVERSAL; Overall Height: 9.000 INCHES NOMINAL IN; Inlet Location: CENTRALLY LOCATED ON BOTTOM END SECTION OF BODY; Design Type: DRY. 13 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.