The Piston and Ring Assembly, cataloged under National Stock Number 2815-01-591-9616, is classified within Federal Supply Class 2815 (Diesel Engines and Components) of the Engines, Turbines, and Components group. The manufacturer of record is Oshkosh Defense Llc. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2815-01-591-9616 |
| Primary Part Number | 22KP637 |
| Item Name | Piston and Ring Assembly |
| FSC / FSG | 2815 / 28 — Diesel Engines and Components |
| Manufacturer | Oshkosh Defense Llc |
| 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 |
| Part Number | Manufacturer |
|---|---|
| 22KP637 | Oshkosh Defense Llc (USA) |
| Reference | Meaning |
|---|---|
| 22KP637 | 5/9 Secondary reference Oshkosh Corp |
| 400567B | 3/9 Design control — primary reference Jarp Industries |
NSN 2815-01-591-9616 is a Piston and Ring Assembly, manufactured by Oshkosh Defense Llc, classified under FSC 2815, Diesel Engines and Components. Status: active.
NSN 2815-01-591-9616 has 1 manufacturer part number on file: 22KP637 (Oshkosh Defense Llc).
Key specifications for 22KP637: Special Features: CONSIST OF 1 PISTON, 1 PISTON SEAL, 1 WEAR RING, 1 O-RING; Part Name Assigned by Controlling Agency: PISTON ASSEMBLY. 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.