The Piston,internal Combustion Engin, cataloged under National Stock Number 2805-00-408-9288, is classified within Federal Supply Class 2805 (Gasoline Reciprocating Engines, Except Aircraft; and Components) of the Engines, Turbines, and Components group. Government technical data includes 26 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2805-00-408-9288 |
| Item Name | Piston,internal Combustion Engin |
| FSC / FSG | 2805 / 28 — Gasoline Reciprocating Engines, Except Aircraft; and Components |
| Status | ACTIVE |
| Carbon Groove | NOT INCLUDED |
| Ring Groove Width | 0.0940 INCHES NOMINAL FIRST RING IN |
| Ring Groove Width | 0.1880 INCHES NOMINAL THIRD RING IN |
| Ring Groove Width | 0.0940 INCHES NOMINAL SECOND RING IN |
| Distance Between Pin Bosses | 1.260 INCHES NOMINAL IN |
| Retaining Ring Groove | NOT INCLUDED |
| Surface Finish | FINISHED |
| Oil Passage Type | SLOT LOCATION NOT OTHERWISE SPECIFIED |
| Diameter | 4.125 INCHES NOMINAL IN |
| Ring Groove Diameter | 3.659 INCHES NOMINAL FIRST RING IN |
| Ring Groove Diameter | 3.659 INCHES NOMINAL SECOND RING IN |
| Ring Groove Diameter | 3.685 INCHES NOMINAL THIRD RING IN |
| Distance From Pin Hole Center to Extreme Top | 2.271 INCHES NOMINAL IN |
| Pin | INCLUDED |
| Pin Type for Which Designed | FLOATING |
| Oil Groove | NOT INCLUDED |
| Head Style | CONCAVE |
| Ring Groove Quantity | 3 |
| Skirt Bottom Cutaway Feature | INCLUDED |
| Finished Size Designation | STANDARD |
| Ring | NOT INCLUDED |
| Pinhole Diameter | 1.0630 INCHES NOMINAL IN |
| Pin Hole Bushing | NOT INCLUDED |
| Material | ALUMINUM ALLOY |
| Skirt Type | SOLID |
| Cut Depth | 0.350 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 309280C31 | 5/9 Secondary reference U.S. Government activity |
| ZAJ4133151 | 3/2 Design control — primary reference U.S. Government activity |
| P1425 | 3/2 Design control — primary reference U.S. Government activity |
| 309280C31 | 5/9 Secondary reference Navistar International Corporation Dba Navistar |
NSN 2805-00-408-9288 is a Piston,internal Combustion Engin, classified under FSC 2805, Gasoline Reciprocating Engines, Except Aircraft; and Components. Status: active.
3 possible matches (shared part number, not a government interchangeability claim): 1560-00-497-3667, 5365-00-700-2768, 5340-01-468-3027. Verify interchangeability with system specifications before substitution.
Key specifications for 2805-00-408-9288: Overall Height: 3.415 INCHES NOMINAL IN; Carbon Groove: NOT INCLUDED; Ring Groove Width: 0.0940 INCHES NOMINAL FIRST RING IN; Ring Groove Width: 0.1880 INCHES NOMINAL THIRD RING IN. 26 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.