The Piston,internal Combustion Engin, cataloged under National Stock Number 2805-01-421-0051, is classified within Federal Supply Class 2805 (Gasoline Reciprocating Engines, Except Aircraft; and Components) of the Engines, Turbines, and Components group. The manufacturer of record is Brp Us Inc. Government technical data includes 8 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2805-01-421-0051 |
| Primary Part Number | 435546 |
| Item Name | Piston,internal Combustion Engin |
| FSC / FSG | 2805 / 28 — Gasoline Reciprocating Engines, Except Aircraft; and Components |
| Manufacturer | Brp Us Inc |
| Status | ACTIVE |
| Retaining Ring Groove | INCLUDED |
| Surface Finish | FINISHED |
| Pin | INCLUDED |
| Ring Groove Quantity | 2 |
| Skirt Bottom Cutaway Feature | INCLUDED |
| Finished Size Designation | STANDARD |
| Ring | NOT INCLUDED |
| Skirt Type | SEMISPLIT |
| 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 |
|---|---|
| 435546 PRIMARY | Brp Us Inc (USA) |
| Reference | Meaning |
|---|---|
| 435546 | 5/9 Secondary reference Outboard Marine Corp Johnson Motors Div |
| 435546 | 5/9 Secondary reference Evinrude Motors Product Group of Outboard Marine Corp |
| 435546 | 5/9 Secondary reference U.S. Government activity |
NSN 2805-01-421-0051 is a Piston,internal Combustion Engin, manufactured by Brp Us Inc, classified under FSC 2805, Gasoline Reciprocating Engines, Except Aircraft; and Components. Status: active.
NSN 2805-01-421-0051 has 1 manufacturer part number on file: 435546 (Brp Us Inc).
1 possible match (shared part number, not a government interchangeability claim): 4210-01-448-5107. Verify interchangeability with system specifications before substitution.
Key specifications for 435546: Retaining Ring Groove: INCLUDED; Surface Finish: FINISHED; Pin: INCLUDED; Ring Groove Quantity: 2. 8 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.