The Cap Assembly,protective,muffler-, cataloged under National Stock Number 2990-01-588-6228, is classified within Federal Supply Class 2990 (Miscellaneous Engine Accessories, Nonaircraft) of the Engine Accessories group. The manufacturer of record is Sierra International Inc. Dba Teleflex Marine. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2990-01-588-6228 |
| Primary Part Number | 18-4458 |
| Item Name | Cap Assembly,protective,muffler- |
| FSC / FSG | 2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft |
| Manufacturer | Sierra International Inc. Dba Teleflex Marine |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 2990-01-588-6228 is a Cap Assembly,protective,muffler-, manufactured by Sierra International Inc. Dba Teleflex Marine, classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.
NSN 2990-01-588-6228 has 2 manufacturer part numbers on file: 18-4458 (Sierra International Inc. Dba Teleflex Marine), 18-4458 (Paxton Co).
Key specifications for 18-4458: Part Name Assigned by Controlling Agency: FLAPPER, EXHAUST; End Item Identification: BOAT, RIGID. 0 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.