The Valve,poppet,engine, cataloged under National Stock Number 2815-00-103-8566, is classified within Federal Supply Class 2815 (Diesel Engines and Components) of the Engines, Turbines, and Components group. The manufacturer of record is Caterpillar Inc Div Caterpillar Defense. Government technical data includes 16 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2815-00-103-8566 |
| Primary Part Number | 2S8143 |
| Item Name | Valve,poppet,engine |
| FSC / FSG | 2815 / 28 — Diesel Engines and Components |
| Manufacturer | Caterpillar Inc Div Caterpillar Defense |
| Status | ACTIVE |
| Stem Diameter | 0.3100 INCHES NOMINAL IN |
| Head Height | 0.2000 INCHES NOMINAL IN |
| Stem Length | 5.6000 INCHES NOMINAL IN |
| Seat Angle in Deg | 45.0 |
| Chamfer Length | 0.0315 INCHES NOMINAL IN |
| Neck Radius | 0.5000 INCHES NOMINAL IN |
| Groove Diameter | 0.2680 INCHES NOMINAL IN |
| Distance From Groove to Stem End | 0.1950 INCHES NOMINAL IN |
| Outside Diameter | 1.4300 INCHES NOMINAL IN |
| Stem Style | GROOVED |
| Head Style | FLAT |
| Carbon Relief Groove | NOT INCLUDED |
| Chamfer Angle in Deg | 45.0 |
| Material | STEEL CORROSION RESISTING HEAD |
| Material | STEEL STEM |
| Groove Width | 0.1000 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 |
NSN 2815-00-103-8566 is a Valve,poppet,engine, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 2815, Diesel Engines and Components. Status: active.
NSN 2815-00-103-8566 has 2 manufacturer part numbers on file: V3C0IXS (Trw Inc Trw Intl Trade Government Sales Dept), 2S8143 (Caterpillar Inc Div Caterpillar Defense).
Key specifications for 2S8143: Stem Diameter: 0.3100 INCHES NOMINAL IN; Head Height: 0.2000 INCHES NOMINAL IN; Stem Length: 5.6000 INCHES NOMINAL IN; Seat Angle in Deg: 45.0. 16 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.