The Muffler,exhaust, cataloged under National Stock Number 2990-00-498-3775, 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 19 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2990-00-498-3775 |
| Primary Part Number | 10307-N |
| Item Name | Muffler,exhaust |
| FSC / FSG | 2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft |
| Manufacturer | Cummins Filtration Inc. |
| Status | ACTIVE |
| Operating Position | HORIZONTAL |
| Inlet Location | CENTRALLY LOCATED IN END SECTION OF BODY |
| Coolant Type | AIR |
| Design Type | DRY |
| Outlet Inside Diameter | 4.265 INCHES NOMINAL FIRST OUTLET IN |
| Inlet Projection Length | 2.000 INCHES NOMINAL SINGLE INLET IN |
| Baffle Quantity | 2 |
| Muffler Design | STRAIGHT THROUGH W/BAFFLE |
| Tube Quantity | 2 |
| Inlet Connection Type | UNTHREADED SINGLE INLET |
| Body Shape | OVAL |
| Outlet Integral Tail Pipe Length | 2.000 INCHES NOMINAL FIRST OUTLET IN |
| Surface Treatment | ALUMINUM |
| Inlet Inside Diameter | 4.515 INCHES NOMINAL SINGLE INLET IN |
| Inlet Integral Manifold Exhaust Pipe Length | 2.000 INCHES NOMINAL SINGLE INLET IN |
| Material | STEEL LOCATION NOT OTHERWISE SPECIFIED |
| Outlet Projection Length | 2.000 INCHES NOMINAL FIRST OUTLET IN |
| Outlet Connection Type | UNTHREADED FIRST OUTLET |
| Outlet Location | CENTRALLY LOCATED IN 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 |
|---|---|
| 10307-N | Cummins Filtration Inc. (USA) |
| Reference | Meaning |
|---|---|
| T10307 | 5/9 Secondary reference Cummins Filtration Inc. |
| 484387 | 5/9 Secondary reference Terex American Crane Corp |
| 13205E3401-2 | 3/2 Design control — primary reference U.S. Government activity |
| 484387 | 5/9 Secondary reference American Hoist and Derrick Co |
NSN 2990-00-498-3775 is a Muffler,exhaust, manufactured by Cummins Filtration Inc., classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.
NSN 2990-00-498-3775 has 1 manufacturer part number on file: 10307-N (Cummins Filtration Inc.).
Key specifications for 10307-N: Operating Position: HORIZONTAL; Overall Height: 9.625 INCHES NOMINAL IN; Inlet Location: CENTRALLY LOCATED IN END SECTION OF BODY; Coolant Type: AIR. 19 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.