The Pipe,exhaust, cataloged under National Stock Number 2990-01-166-8827, 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 5 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2990-01-166-8827 |
| Primary Part Number | 334623 |
| Item Name | Pipe,exhaust |
| FSC / FSG | 2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft |
| Manufacturer | General Motors Llc Dba General Motors Llc |
| Status | ACTIVE |
| End Item Model Number | SERIES C10,1973 |
| End Item Source | 11862 |
| Design Form | PREBENT |
| End Item Name | TRUCK |
| Usage Location | TAIL PIPE |
| 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 |
|---|---|
| 334623 PRIMARY | General Motors Llc Dba General Motors Llc (USA) |
| T4-2814 | Maremont Corp (USA) |
| Reference | Meaning |
|---|---|
| 334623 | 5/9 Secondary reference General Motors Corp Chevrolet Motor Div Special Products Dept |
| 54548 | 5/9 Secondary reference U.S. Government activity |
| T4-2814 | 5/9 Secondary reference Maremount Corp |
| TA2814 | 5/9 Secondary reference Maremount Corp |
NSN 2990-01-166-8827 is a Pipe,exhaust, manufactured by General Motors Llc Dba General Motors Llc, classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.
NSN 2990-01-166-8827 has 2 manufacturer part numbers on file: 334623 (General Motors Llc Dba General Motors Llc), T4-2814 (Maremont Corp).
1 possible match (shared part number, not a government interchangeability claim): 5136-01-625-3572. Verify interchangeability with system specifications before substitution.
Key specifications for 334623: End Item Model Number: SERIES C10,1973; End Item Source: 11862; Design Form: PREBENT; End Item Name: TRUCK. 5 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.