The Manifold,exhaust, cataloged under National Stock Number 2815-01-677-4944, is classified within Federal Supply Class 2815 (Diesel Engines and Components) of the Engines, Turbines, and Components group. The manufacturer of record is General Motors Corp. Government technical data includes 3 specifications, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 2815-01-677-4944 |
| Primary Part Number | 12637647 |
| Item Name | Manifold,exhaust |
| FSC / FSG | 2815 / 28 — Diesel Engines and Components |
| Manufacturer | General Motors Corp |
| Status | ACTIVE |
| Bolt Hole Diameter | 6.0 MILLIMETERS NOMINAL MM |
| Bolt Hole Quantity | 4 |
| Material | IRON CAST |
| 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 |
|---|---|
| 12637647 PRIMARY | General Motors Corp (USA) |
| Reference | Meaning |
|---|---|
| 4367833 | 7/2 Vendor item drawing reference Oshkosh Defense Llc |
NSN 2815-01-677-4944 is a Manifold,exhaust, manufactured by General Motors Corp, classified under FSC 2815, Diesel Engines and Components. Status: active.
NSN 2815-01-677-4944 has 1 manufacturer part number on file: 12637647 (General Motors Corp).
1 possible match (shared part number, not a government interchangeability claim): 2590-01-685-7119. Verify interchangeability with system specifications before substitution.
Key specifications for 12637647: Bolt Hole Diameter: 6.0 MILLIMETERS NOMINAL MM; Bolt Hole Quantity: 4; Special Features: MANIFOLD,EXHAUST;LENGHT16.31 IN;WIDTH4.20;HEIGHT 3.77 IN IN; Part Name Assigned by Controlling Agency: MANF, EXH, DMAX, LH. 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.