The Piston,internal Combustion Engin, cataloged under National Stock Number 2805-01-179-5818, 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 Military Vehicles Opn General Motors Truck and Bus Group Ms 2603-02. Government technical data includes 3 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2805-01-179-5818 |
| Primary Part Number | 644156 |
| Item Name | Piston,internal Combustion Engin |
| FSC / FSG | 2805 / 28 — Gasoline Reciprocating Engines, Except Aircraft; and Components |
| Manufacturer | Military Vehicles Opn General Motors Truck and Bus Group Ms 2603-02 |
| Status | ACTIVE |
| Pin | INCLUDED |
| Oversize | 0.040 INCHES NOMINAL IN |
| Finished Size Designation | OVERSIZE |
| 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 |
|---|---|
| 644156 PRIMARY | Military Vehicles Opn General Motors Truck and Bus Group Ms 2603-02 (USA) |
| L213NF040 PRIMARY | Trw Inc Trw Intl Trade Government Sales Dept (USA) |
| Reference | Meaning |
|---|---|
| 2228PN040 | 5/9 Secondary reference Bosch Automotive Service Solutions Inc. |
| 2424978 | 5/9 Secondary reference Military Vehicles Opn General Motors Truck and Bus Group Ms 2603-02 |
| 2228PN040 | 5/9 Secondary reference Spx Corp |
NSN 2805-01-179-5818 is a Piston,internal Combustion Engin, manufactured by Military Vehicles Opn General Motors Truck and Bus Group Ms 2603-02, classified under FSC 2805, Gasoline Reciprocating Engines, Except Aircraft; and Components. Status: active.
NSN 2805-01-179-5818 has 2 manufacturer part numbers on file: 644156 (Military Vehicles Opn General Motors Truck and Bus Group Ms 2603-02), L213NF040 (Trw Inc Trw Intl Trade Government Sales Dept).
Key specifications for 644156: Pin: INCLUDED; Oversize: 0.040 INCHES NOMINAL IN; Finished Size Designation: OVERSIZE; Special Features: GENERAL MOTORS TRUCK MODEL 85; 6 CYLINDER. 3 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.