The Muffler,exhaust, cataloged under National Stock Number 2990-01-333-5936, is classified within Federal Supply Class 2990 (Miscellaneous Engine Accessories, Nonaircraft) of the Engine Accessories group. The manufacturer of record is Cummins Filtration Inc.. Government technical data includes 12 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2990-01-333-5936 |
| Primary Part Number | 86188-M |
| Item Name | Muffler,exhaust |
| FSC / FSG | 2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft |
| Manufacturer | Cummins Filtration Inc. |
| Status | ACTIVE |
| Operating Position | VERTICAL |
| Inlet Location | CENTRALLY LOCATED END OF BODY |
| Coolant Type | AIR |
| Design Type | DRY |
| Overall Diameter | 7.100 INCHES NOMINAL IN |
| Outlet Inside Diameter | 3.500 INCHES NOMINAL FIRST OUTLET IN |
| Inlet Projection Length | 3.725 INCHES NOMINAL SINGLE INLET IN |
| Inlet Connection Type | UNTHREADED SINGLE INLET |
| Body Shape | ROUND |
| Inlet Inside Diameter | 3.500 INCHES NOMINAL SINGLE INLET IN |
| Outlet Connection Type | UNTHREADED FIRST OUTLET |
| Outlet Location | CENTRALLY LOCATED TOP END 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 |
|---|---|
| 86188-M PRIMARY | Cummins Filtration Inc. (USA) |
| Reference | Meaning |
|---|---|
| 74001487 | 5/9 Secondary reference Maxon Industries, Inc. |
| HD350 | 5/9 Secondary reference Riker Products |
NSN 2990-01-333-5936 is a Muffler,exhaust, manufactured by Cummins Filtration Inc., classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.
NSN 2990-01-333-5936 has 1 manufacturer part number on file: 86188-M (Cummins Filtration Inc.).
Key specifications for 86188-M: Operating Position: VERTICAL; Inlet Location: CENTRALLY LOCATED END OF BODY; Coolant Type: AIR; Design Type: DRY. 12 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.