PartsTable TECHNICAL DATA SHEET

NSN 2990-01-290-8228Government record, cited

Heater, Coolant, Engine2990-01-290-8228

NSN 2990-01-290-8228 · NIIN 012908228 · Part number 6N1604

Caterpillar Inc Div Caterpillar Defense · FSC 2990 — Miscellaneous Engine Accessories, Nonaircraft · FSG 29 — Engine Accessories · CAGE 11083

Government record, cited

NSN 2990-01-290-8228 — this item is cataloged by the U.S. Government under National Stock Number 2990-01-290-8228. Manufacturer of record part number: 6N1604.

Also searched as 2990-01-290-8228 · 2990012908228 · NIIN 012908228 · 01-290-8228 · FSC 2990 Miscellaneous Engine Accessories, Nonaircraft · CAGE 11083 · 6N1604 · 4N3586 · 9N5253 · 9G6657 · 9N5253

Nearby stock numbers ← 2990-01-290-7990 Guide, Piston · 2990-01-290-8229 Heater, Coolant, Engine →

Features

Heater,coolant,engine — FSC 2990
2 manufacturer part numbers on file
Manufacturer of record: Caterpillar Inc Div Caterpillar Defense

Identification

NSN: 2990-01-290-8228
NIIN: 012908228
FSC: 2990 — Miscellaneous Engine Accessories, Nonaircraft
FSG: 29 — Engine Accessories
Primary part number: 6N1604
Manufacturer: Caterpillar Inc Div Caterpillar Defense

General Description

The Heater,coolant,engine, cataloged under National Stock Number 2990-01-290-8228, is classified within Federal Supply Class 2990 (Miscellaneous Engine Accessories, Nonaircraft) of the Engine Accessories group. The manufacturer of record is Caterpillar Inc Div Caterpillar Defense. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.

Catalog Facts

Item Name	Heater,coolant,engine
FSC / FSG	2990 — Miscellaneous Engine Accessories, Nonaircraft (FSG 29)
Manufacturers	Caterpillar Inc Div Caterpillar Defense (CAGE 11083); Westrac Equipment Pty Ltd (CAGE Z02C9)

Technical Specifications

Parameter	Value
NSN	2990-01-290-8228
Primary Part Number	6N1604
Item Name	Heater,coolant,engine
FSC / FSG	2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft
Manufacturer	Caterpillar Inc Div Caterpillar Defense
Status	ACTIVE

Lifecycle & Compliance

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

Cross-Reference Index

Part Number	Manufacturer
6N1604 PRIMARY	Caterpillar Inc Div Caterpillar Defense (USA)
9N5253	Westrac Equipment Pty Ltd (AUS)

Reference documents

Reference	Meaning
4N3586	5/9 Secondary reference Caterpillar Inc Div Caterpillar Defense
9N5253	5/9 Secondary reference Caterpillar Inc Div Caterpillar Defense
9G6657	5/9 Secondary reference Caterpillar Inc Div Caterpillar Defense

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 2990-01-290-8228?

NSN 2990-01-290-8228 is a Heater,coolant,engine, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.

What part numbers are listed for NSN 2990-01-290-8228?

NSN 2990-01-290-8228 has 2 manufacturer part numbers on file: 6N1604 (Caterpillar Inc Div Caterpillar Defense), 9N5253 (Westrac Equipment Pty Ltd).

Is NSN 2990-01-290-8228 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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