The Ring Set,piston, cataloged under National Stock Number 2815-01-021-5002, is classified within Federal Supply Class 2815 (Diesel Engines and Components) of the Engines, Turbines, and Components group. The manufacturer of record is Perkins Engines Inc. 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Ring Set,piston |
| FSC / FSG | 2815 — Diesel Engines and Components (FSG 28) |
| Manufacturers | Perkins Engines Inc (CAGE 13446) |
| Parameter | Value |
|---|---|
| NSN | 2815-01-021-5002 |
| Primary Part Number | 41158086 |
| Item Name | Ring Set,piston |
| FSC / FSG | 2815 / 28 — Diesel Engines and Components |
| Manufacturer | Perkins Engines Inc |
| 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 |
|---|---|
| 41158086 PRIMARY | Perkins Engines Inc (USA) |
| Reference | Meaning |
|---|---|
| 86764 | 5/9 Secondary reference Perkins Engines Inc |
| 25-64108-20 | C/1 Advisory reference — outside the item-of-supply concept Carrier Corp |
| 41158.86 | 5/9 Secondary reference Perkins Engines Inc |
NSN 2815-01-021-5002 is a Ring Set,piston, manufactured by Perkins Engines Inc, classified under FSC 2815, Diesel Engines and Components. Status: active.
NSN 2815-01-021-5002 has 1 manufacturer part number on file: 41158086 (Perkins Engines Inc).
1 possible match (shared part number, not a government interchangeability claim): 5340-01-620-7265. 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.