PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

3N4003Core Assembly,fluid Heater,indus

Caterpillar Inc Div Caterpillar Defense · NSN 4420-01-208-9411 · FSC 4420 · No Item Name Available
Verified by PartsTable
NSN 4420-01-208-9411 — this item is cataloged by the U.S. Government under National Stock Number 4420-01-208-9411. Primary manufacturer part number: 3N4003.
Features
  • Core Assembly,fluid Heater,indus — FSC 4420
  • 3 verified cross-references
  • Primary manufacturer: Caterpillar Inc Div Caterpillar Defense
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Core Assembly,fluid Heater,indus, cataloged under National Stock Number 4420-01-208-9411, is classified within Federal Supply Class 4420 (No Item Name Available) of the Furnace, Steam, Drying, Nuclear Reactors group. The primary manufacturer of record is Caterpillar Inc Div Caterpillar Defense. This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameCore Assembly,fluid Heater,indus
FSC / FSG4420 — No Item Name Available (FSG 44)
ManufacturersCaterpillar Inc Div Caterpillar Defense (CAGE 11083); Stewart-Warner Corporation (CAGE 57733)
Technical Specifications
ParameterValue
NSN4420-01-208-9411
Primary Part Number3N4003
Item NameCore Assembly,fluid Heater,indus
FSC / FSG4420 / 44 — No Item Name Available
ManufacturerCaterpillar Inc Div Caterpillar Defense
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
6105-00-295-1634 INTERCHANGEABLE
Stator,motor
2840-00-782-1846611572 INTERCHANGEABLE
Vane Assembly,fan,aircraft Gas T
Curtiss-Wright Controls, Inc. Div Actuation Division
4720-01-707-446761157-2 INTERCHANGEABLE
Hose Assembly,nonmetallic
Fisica Applied Technologies, Inc. Div Randtron Antenna Systems
Cross-Reference Index
Part NumberManufacturer
3N8890 ITEM 11 Caterpillar Inc Div Caterpillar Defense (USA)
6-11572 Stewart-Warner Corporation (USA)
3N4003 PRIMARY Caterpillar Inc Div Caterpillar Defense (USA)
Related Parts
6105-00-295-1634INTERCHANGEABLE
STATOR,MOTOR
2840-00-782-1846INTERCHANGEABLE
VANE ASSEMBLY,FAN,AIRCRAFT GAS T
611572
4720-01-707-4467INTERCHANGEABLE
HOSE ASSEMBLY,NONMETALLIC
61157-2

Frequently Asked Questions

What is NSN 4420-01-208-9411?

NSN 4420-01-208-9411 is a Core Assembly,fluid Heater,indus, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 4420 (No Item Name Available). Status: active.

What are the part numbers for NSN 4420-01-208-9411?

NSN 4420-01-208-9411 has 3 cross-referenced part numbers: 3N8890 ITEM 11 (Caterpillar Inc Div Caterpillar Defense), 6-11572 (Stewart-Warner Corporation), 3N4003 (Caterpillar Inc Div Caterpillar Defense).

What NSN replaces 4420-01-208-9411?

There are 3 known substitutes for 4420-01-208-9411: 6105-00-295-1634, 2840-00-782-1846, 4720-01-707-4467. Verify interchangeability with system specifications before substitution.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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