Heater, Air Duct-Coolant, Engine2990-01-662-3970

NSN 2990-01-662-3970 · NIIN 016623970 · Part number 369D28304

Md Helicopters Inc · FSC 2990 — Miscellaneous Engine Accessories, Nonaircraft · FSG 29 — Engine Accessories · CAGE 1KVX4

Government record, cited

NSN 2990-01-662-3970 — this item is cataloged by the U.S. Government under National Stock Number 2990-01-662-3970. Manufacturer of record part number: 369D28304.

Also searched as 2990-01-662-3970 · 2990016623970 · NIIN 016623970 · 01-662-3970 · FSC 2990 Miscellaneous Engine Accessories, Nonaircraft · CAGE 1KVX4 · 369D28304

Nearby stock numbers ← 2990-01-662-3234 Cartridge, Turbocharger · 2990-01-662-4600 Switch, Engine Temperature, Automo →

Features

Heater,air Duct-Coolant,engine — FSC 2990
2 manufacturer part numbers on file
Manufacturer of record: Md Helicopters Inc

Identification

NSN: 2990-01-662-3970
NIIN: 016623970
FSC: 2990 — Miscellaneous Engine Accessories, Nonaircraft
FSG: 29 — Engine Accessories
Primary part number: 369D28304
Manufacturer: Md Helicopters Inc

General Description

The Heater,air Duct-Coolant,engine, cataloged under National Stock Number 2990-01-662-3970, is classified within Federal Supply Class 2990 (Miscellaneous Engine Accessories, Nonaircraft) of the Engine Accessories group. The manufacturer of record is Md Helicopters Inc. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.

Catalog Facts

Item Name	Heater,air Duct-Coolant,engine
FSC / FSG	2990 — Miscellaneous Engine Accessories, Nonaircraft (FSG 29)
Manufacturers	Leonardo Spa Helicopters Division - Production Site (CAGE A0126); Md Helicopters Inc (CAGE 1KVX4)

Technical Specifications

Parameter	Value
NSN	2990-01-662-3970
Primary Part Number	369D28304
Item Name	Heater,air Duct-Coolant,engine
FSC / FSG	2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft
Manufacturer	Md Helicopters Inc
Status	ACTIVE

Lifecycle & Compliance

Acquisition Status	ACTIVE
DEMIL Code	DEMIL A — No Demilitarization Required
Hazard	No hazard code in the DLA record (HMIC N)
Criticality Code	X

Cross-Reference Index

Part Number	Manufacturer
369D28304	Leonardo Spa Helicopters Division - Production Site (ITA)
369D28304 PRIMARY	Md Helicopters Inc (USA)

No interchangeability data on file.

Other items in FSC 2990 — Miscellaneous Engine Accessories, Nonaircraft

Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.

2990-00-001-0001

BLOWER ASSEMBLY

2990-00-001-1248

2990-00-001-1248 · Item name not on file

2990-00-001-1250

2990-00-001-1250 · Item name not on file

2990-00-001-2055

2990-00-001-2055 · Item name not on file

2990-00-001-3498

2990-00-001-3498 · Item name not on file

2990-00-001-3520

2990-00-001-3520 · Item name not on file

2990-00-001-3521

2990-00-001-3521 · Item name not on file

2990-00-001-3522

CAP ASSEMBLY,MUFFLE

Frequently Asked Questions

What is NSN 2990-01-662-3970?

NSN 2990-01-662-3970 is a Heater,air Duct-Coolant,engine, manufactured by Md Helicopters Inc, classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.

What part numbers are listed for NSN 2990-01-662-3970?

NSN 2990-01-662-3970 has 2 manufacturer part numbers on file: 369D28304 (Leonardo Spa Helicopters Division - Production Site), 369D28304 (Md Helicopters Inc).

Is NSN 2990-01-662-3970 hazardous material?

No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.

Sources

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.

✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.

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