The Heater,air Duct-Coolant,engine, cataloged under National Stock Number 2990-01-422-7758, is classified within Federal Supply Class 2990 (Miscellaneous Engine Accessories, Nonaircraft) of the Engine Accessories group. The manufacturer of record is Austin-Westran Llc. The record lists 4 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Heater,air Duct-Coolant,engine |
| FSC / FSG | 2990 — Miscellaneous Engine Accessories, Nonaircraft (FSG 29) |
| Manufacturers | Bae Systems Tactical Vehicle Systems Lp Dba Data Systems International Inc (CAGE 0FW39); Oshkosh Defense Llc (CAGE 75Q65); Austin-Westran Llc (CAGE 24234); Amz Alabama Inc. (CAGE 076M6) |
| Parameter | Value |
|---|---|
| NSN | 2990-01-422-7758 |
| Primary Part Number | 411271 |
| Item Name | Heater,air Duct-Coolant,engine |
| FSC / FSG | 2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft |
| Manufacturer | Austin-Westran 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 |
|---|---|
| 411271 | Bae Systems Tactical Vehicle Systems Lp Dba Data Systems International Inc (USA) |
| 3418328 | Oshkosh Defense Llc (USA) |
| 411271 PRIMARY | Austin-Westran Llc (USA) |
| 411271 | Amz Alabama Inc. (USA) |
| Reference | Meaning |
|---|---|
| 3418328 | 7/9 Vendor item drawing reference Oshkosh Corp |
NSN 2990-01-422-7758 is a Heater,air Duct-Coolant,engine, manufactured by Austin-Westran Llc, classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.
NSN 2990-01-422-7758 has 4 manufacturer part numbers on file: 411271 (Bae Systems Tactical Vehicle Systems Lp Dba Data Systems International Inc), 3418328 (Oshkosh Defense Llc), 411271 (Austin-Westran Llc), 411271 (Amz Alabama Inc.).
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.