The Muffler,exhaust, cataloged under National Stock Number 2990-00-617-8573, 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 18 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 2990-00-617-8573 |
| Primary Part Number | T-7497 |
| Item Name | Muffler,exhaust |
| FSC / FSG | 2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft |
| Manufacturer | Cummins Filtration Inc. |
| Status | ACTIVE |
| Operating Position | VERTICAL |
| Inlet Location | ONSIDE OF BODY 3.500 IN. C OF INLET TO END OF BODY,ON SIDE OF BODY 3.500 IN. C OF INLET TO END OF BODY IN |
| Coolant Type | AIR |
| Design Type | DRY |
| Overall Diameter | 8.500 INCHES NOMINAL IN |
| Inlet Projection Length | 3.000 INCHES NOMINAL SINGLE INLET IN |
| Muffler Design | STRAIGHT THROUGH |
| Outlet Outside Diameter | 3.375 INCHES NOMINAL FIRST OUTLET IN |
| Tube Quantity | 3 |
| Inlet Connection Type | UNTHREADED FIRST INLET |
| Inlet Connection Type | UNTHREADED SECOND INLET |
| Body Shape | ROUND |
| Surface Treatment | ALUMINUM ALLOY |
| Inlet Inside Diameter | 4.015 INCHES NOMINAL SINGLE INLET IN |
| Material | STEEL LOCATION NOT OTHERWISE SPECIFIED |
| Outlet Projection Length | 3.000 INCHES NOMINAL FIRST OUTLET IN |
| Outlet Connection Type | UNTHREADED FIRST OUTLET |
| Outlet Location | IN CENTER ON SIDE |
| 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 |
|---|---|
| ABT7497 | Brighton Cromwell Llc (USA) |
| T-7497 PRIMARY | Cummins Filtration Inc. (USA) |
| Reference | Meaning |
|---|---|
| SD802E205 | 5/9 Secondary reference Spalla Inc |
| ABT7497 | 5/9 Secondary reference Ar Bee Corp |
| SD802E205 | 5/9 Secondary reference Teledyne Continental Motors Industrial Products Div Teledyne Industries Inc Sub of Teledyne Inc |
| 7497 | D/9 Drawing number reference only Cummins Filtration Inc. |
NSN 2990-00-617-8573 is a Muffler,exhaust, manufactured by Cummins Filtration Inc., classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.
NSN 2990-00-617-8573 has 2 manufacturer part numbers on file: ABT7497 (Brighton Cromwell Llc), T-7497 (Cummins Filtration Inc.).
2 possible matches (shared part number, not a government interchangeability claim): 5120-01-396-5797, 6210-01-616-9866. Verify interchangeability with system specifications before substitution.
Key specifications for T-7497: Operating Position: VERTICAL; Inlet Location: ONSIDE OF BODY 3.500 IN. C OF INLET TO END OF BODY,ON SIDE OF BODY 3.500 IN. C OF INLET TO END OF BODY IN; Coolant Type: AIR; Design Type: DRY. 18 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.