The Muffler,exhaust, cataloged under National Stock Number 2990-01-398-4502, is classified within Federal Supply Class 2990 (Miscellaneous Engine Accessories, Nonaircraft) of the Engine Accessories group. The manufacturer of record is Am General Llc. Government technical data includes 10 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2990-01-398-4502 |
| Primary Part Number | RCSK-15628 |
| Item Name | Muffler,exhaust |
| FSC / FSG | 2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft |
| Manufacturer | Am General Llc |
| Status | ACTIVE |
| Inlet Flange Shape | ROUND SINGLE INLET |
| Operating Position | HORIZONTAL |
| Coolant Type | WATER |
| Design Type | DRY |
| Muffler Design | STRAIGHT THROUGH |
| Outlet Flange Shape | ROUND FIRST OUTLET |
| Inlet Connection Type | FLANGE SINGLE INLET |
| Body Shape | RECTANGULAR |
| Material | STEEL LOCATION NOT OTHERWISE SPECIFIED |
| Outlet Connection Type | FLANGE FIRST OUTLET |
| 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 |
|---|---|
| RCSK-15628 | Am General Llc (USA) |
| Reference | Meaning |
|---|---|
| 2990013984502 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
| 24387-A | 3/9 Design control — primary reference Nelson Muffler Corp |
| RCSK-15628 | 5/9 Secondary reference U S Army Tank Automotive Command Amsta-Im-Mm |
NSN 2990-01-398-4502 is a Muffler,exhaust, manufactured by Am General Llc, classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.
NSN 2990-01-398-4502 has 1 manufacturer part number on file: RCSK-15628 (Am General Llc).
Key specifications for RCSK-15628: Inlet Flange Shape: ROUND SINGLE INLET; Operating Position: HORIZONTAL; Coolant Type: WATER; Design Type: DRY. 10 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.