The Pipe,exhaust, cataloged under National Stock Number 2990-01-003-2585, 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. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 2990-01-003-2585 |
| Primary Part Number | 3986651 |
| Item Name | Pipe,exhaust |
| FSC / FSG | 2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft |
| Manufacturer | General Motors Llc Dba General Motors Llc |
| Status | ACTIVE |
| Material | STEEL |
| 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 |
|---|---|
| 3986651 PRIMARY | General Motors Llc Dba General Motors Llc (USA) |
| Reference | Meaning |
|---|---|
| 3986651 | 5/9 Secondary reference General Motors Corp Chevrolet Motor Div Special Products Dept |
| 3948652 | 5/9 Secondary reference General Motors Corp Chevrolet Motor Div Special Products Dept |
| 68150 | 5/9 Secondary reference U.S. Government activity |
| 3948653 | 5/9 Secondary reference General Motors Corp Chevrolet Motor Div Special Products Dept |
| 3952009 | 5/9 Secondary reference General Motors Corp Chevrolet Motor Div Special Products Dept |
| 46299 | 5/9 Secondary reference Walker Mfg Co |
NSN 2990-01-003-2585 is a Pipe,exhaust, manufactured by General Motors Llc Dba General Motors Llc, classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.
NSN 2990-01-003-2585 has 1 manufacturer part number on file: 3986651 (General Motors Llc Dba General Motors Llc).
2 possible matches (shared part number, not a government interchangeability claim): 4810-01-161-9903, 6150-01-266-8873. Verify interchangeability with system specifications before substitution.
Key specifications for 3986651: End Item Identification: CHEVROLET MOTOR DIV OF GMC,TRUCK MDLS P20,P30 WITH 350 CU. IN. ENGINE; Material: STEEL. 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.