The Valve,positive Crankcase Ventila, cataloged under National Stock Number 2990-01-563-2939, is classified within Federal Supply Class 2990 (Miscellaneous Engine Accessories, Nonaircraft) of the Engine Accessories group. The manufacturer of record is General Motors Llc Dba General Motors Llc. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2990-01-563-2939 |
| Primary Part Number | 12597567 |
| Item Name | Valve,positive Crankcase Ventila |
| FSC / FSG | 2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft |
| Manufacturer | General Motors Llc Dba General Motors Llc |
| Status | ACTIVE |
| 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 |
|---|---|
| 12597567 PRIMARY | General Motors Llc Dba General Motors Llc (USA) |
| Reference | Meaning |
|---|---|
| 214-1678 | C/1 Advisory reference — outside the item-of-supply concept General Motors Llc Dba General Motors Llc |
| 12597567 | 5/9 Secondary reference General Motors Corp |
| 214-1678 | 5/9 Secondary reference General Motors Corp AC-Delco Div Government Order Dept |
| 12597341 | 5/9 Secondary reference General Motors Llc Dba General Motors Llc |
| 12597341 | 3/9 Design control — primary reference General Motors Corp |
NSN 2990-01-563-2939 is a Valve,positive Crankcase Ventila, manufactured by General Motors Llc Dba General Motors Llc, classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.
NSN 2990-01-563-2939 has 1 manufacturer part number on file: 12597567 (General Motors Llc Dba General Motors Llc).
Key specifications for 12597567: Special Features: END ITEM IS CK2,3 ENGINE ASM-6.0L V8. 0 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.