The Pump,air,emission Control, cataloged under National Stock Number 2990-01-271-1957, is classified within Federal Supply Class 2990 (Miscellaneous Engine Accessories, Nonaircraft) of the Engine Accessories group. The manufacturer of record is Linear Motion Llc Div Ugm. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2990-01-271-1957 |
| Primary Part Number | 7843103 |
| Item Name | Pump,air,emission Control |
| FSC / FSG | 2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft |
| Manufacturer | Linear Motion Llc Div Ugm |
| Status | ACTIVE |
| General Characteristics Item Description | STEEL BODY; PART OF EMISSION CONTROL |
| 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 |
|---|---|
| 7843103 | Linear Motion Llc Div Ugm (USA) |
| 7843103 | General Motors Llc Dba General Motors Llc (USA) |
| Reference | Meaning |
|---|---|
| 7843103 | 3/9 Design control — primary reference General Motors Corp Saginaw Div |
| 7843103 | 5/9 Secondary reference General Motors Corp Chevrolet Motor Div Special Products Dept |
NSN 2990-01-271-1957 is a Pump,air,emission Control, manufactured by Linear Motion Llc Div Ugm, classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.
NSN 2990-01-271-1957 has 2 manufacturer part numbers on file: 7843103 (Linear Motion Llc Div Ugm), 7843103 (General Motors Llc Dba General Motors Llc).
Key specifications for 7843103: General Characteristics Item Description: STEEL BODY; PART OF EMISSION CONTROL. 1 specification is 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.