The Valve,heater Control,vehicular, cataloged under National Stock Number 2540-01-161-9623, is classified within Federal Supply Class 2540 (Vehicular Furniture and Accessories) of the Vehicular Equipment Components 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 2 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 2540-01-161-9623 |
| Primary Part Number | 1398210 |
| Item Name | Valve,heater Control,vehicular |
| FSC / FSG | 2540 / 25 — Vehicular Furniture and Accessories |
| Manufacturer | Oshkosh Defense Llc |
| Status | ACTIVE |
| General Characteristics Item Description | 1.810 IN. SQ; W/CONTROL LEVER AND TWO 0.625 IN. DIA EXTERNAL HOSE CONNECTIONS FOR INLET AND OUTLET IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Unit of Issue | EA |
NSN 2540-01-161-9623 is a Valve,heater Control,vehicular, manufactured by Oshkosh Defense Llc, classified under FSC 2540, Vehicular Furniture and Accessories. Status: active.
NSN 2540-01-161-9623 has 2 manufacturer part numbers on file: 173093 (Austin-Westran Llc), 1398210 (Oshkosh Defense Llc).
1 possible match (shared part number, not a government interchangeability claim): 5342-01-280-6640. Verify interchangeability with system specifications before substitution.
Key specifications for 1398210: General Characteristics Item Description: 1.810 IN. SQ; W/CONTROL LEVER AND TWO 0.625 IN. DIA EXTERNAL HOSE CONNECTIONS FOR INLET AND OUTLET IN; End Item Identification: 4210-01-137-9944. 1 specification is documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). 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.