The Cap Assembly,protective,muffler-, cataloged under National Stock Number 2990-01-273-7638, is classified within Federal Supply Class 2990 (Miscellaneous Engine Accessories, Nonaircraft) of the Engine Accessories group. The manufacturer of record is Kar Products Llc. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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.
| Item Name | Cap Assembly,protective,muffler- |
| FSC / FSG | 2990 — Miscellaneous Engine Accessories, Nonaircraft (FSG 29) |
| Manufacturers | Kar Products Llc (CAGE 5L381) |
| Parameter | Value |
|---|---|
| NSN | 2990-01-273-7638 |
| Primary Part Number | 60162 |
| Item Name | Cap Assembly,protective,muffler- |
| FSC / FSG | 2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft |
| Manufacturer | Kar Products Llc |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| 60162 PRIMARY | Kar Products Llc (USA) |
| Reference | Meaning |
|---|---|
| 76743 | 5/9 Secondary reference U.S. Government activity |
NSN 2990-01-273-7638 is a Cap Assembly,protective,muffler-, manufactured by Kar Products Llc, classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.
NSN 2990-01-273-7638 has 1 manufacturer part number on file: 60162 (Kar Products Llc).
2 possible matches (shared part number, not a government interchangeability claim): 8040-01-312-4389, 6640-01-612-8747. Verify interchangeability with system specifications before substitution.
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.