The Muffler,exhaust, cataloged under National Stock Number 2990-01-027-9457, 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 16 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 2990-01-027-9457 |
| Primary Part Number | T-15497 |
| Item Name | Muffler,exhaust |
| FSC / FSG | 2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft |
| Manufacturer | Cummins Filtration Inc. |
| Status | ACTIVE |
| Inlet Location | OFFSET IN END SECTION OF BODY 2.400 IN. DIS C OF INLET TO C OF BODY IN |
| Coolant Type | AIR |
| Design Type | DRY |
| Inlet Projection Length | 2.000 INCHES NOMINAL SINGLE INLET IN |
| Baffle Quantity | 1 |
| Muffler Design | BAFFLE |
| Outlet Outside Diameter | 1.875 INCHES NOMINAL FIRST OUTLET IN |
| Tube Quantity | 2 |
| Inlet Connection Type | UNTHREADED SINGLE INLET |
| Body Shape | OVAL |
| Surface Treatment | PAINT |
| Inlet Inside Diameter | 1.755 INCHES MINIMUM AND 1.775 INCHES MAXIMUM SINGLE INLET IN |
| Material | STEEL LOCATION NOT OTHERWISE SPECIFIED |
| Outlet Projection Length | 6.300 INCHES NOMINAL FIRST OUTLET IN |
| Outlet Connection Type | UNTHREADED FIRST OUTLET |
| Outlet Location | CENTRALLY LOCATED IN END SECTION OF BODY OPPOSITE INLET END |
| 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 |
|---|---|
| ABT 15497 | Brighton Cromwell Llc (USA) |
| T-15497 PRIMARY | Cummins Filtration Inc. (USA) |
| C7NN-5230-G | New Holland N.v.nc. (USA) |
| Reference | Meaning |
|---|---|
| ABT 15497 | 5/9 Secondary reference Ar Bee Corp |
| 15497 | D/9 Drawing number reference only Cummins Filtration Inc. |
NSN 2990-01-027-9457 is a Muffler,exhaust, manufactured by Cummins Filtration Inc., classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.
NSN 2990-01-027-9457 has 3 manufacturer part numbers on file: ABT 15497 (Brighton Cromwell Llc), T-15497 (Cummins Filtration Inc.), C7NN-5230-G (New Holland N.v.nc.).
2 possible matches (shared part number, not a government interchangeability claim): 3110-01-445-3930, 6515-01-584-5352. Verify interchangeability with system specifications before substitution.
Key specifications for T-15497: Overall Height: 4.120 INCHES NOMINAL IN; Inlet Location: OFFSET IN END SECTION OF BODY 2.400 IN. DIS C OF INLET TO C OF BODY IN; Coolant Type: AIR; Design Type: DRY. 16 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.