The Combustion Chamber,heater Coolan, cataloged under National Stock Number 2990-01-376-5662, is classified within Federal Supply Class 2990 (Miscellaneous Engine Accessories, Nonaircraft) of the Engine Accessories group. The manufacturer of record is Oshkosh Defense Llc. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 3 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2990-01-376-5662 |
| Primary Part Number | 2BG789 |
| Item Name | Combustion Chamber,heater Coolan |
| FSC / FSG | 2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft |
| Manufacturer | Oshkosh Defense Llc |
| Status | ACTIVE |
| General Characteristics Item Description | TUBULAR SHAPED |
| 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 |
|---|---|
| 464.333 | Amz Alabama Inc. (USA) |
| 2BG789 PRIMARY | Oshkosh Defense Llc (USA) |
| 464.333 | Bae Systems Tactical Vehicle Systems Lp Dba Data Systems International Inc (USA) |
| Reference | Meaning |
|---|---|
| 462.152 | 5/9 Secondary reference Webasto Thermosystems Inc |
| 464.333 | 5/9 Secondary reference Webasto Thermo & Comfort North America, Inc. Div Webasto Product North America, Inc |
| 464.333 | 5/9 Secondary reference Webasto Thermosystems Inc |
| 2BG789 | 5/9 Secondary reference Oshkosh Corp |
NSN 2990-01-376-5662 is a Combustion Chamber,heater Coolan, manufactured by Oshkosh Defense Llc, classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.
NSN 2990-01-376-5662 has 3 manufacturer part numbers on file: 464.333 (Amz Alabama Inc.), 2BG789 (Oshkosh Defense Llc), 464.333 (Bae Systems Tactical Vehicle Systems Lp Dba Data Systems International Inc).
Key specifications for 2BG789: General Characteristics Item Description: TUBULAR SHAPED; End Item Identification: 4210-01-137-9944. 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.