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PartsTable / COMPONENT / HE1125-303
HE1125-303 ✓ Verified by PartsTable
— · COMPONENT
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

The CORE ASSEMBLY,FLUID COOLER is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY TUBES, core_width: 11.750 INCHES NOMINAL IN, core_height: 19.063 INCHES NOMINAL IN, core_length: 7.500 INCHES NOMINAL IN, tube_quantity: 197, tube_attachment_method: BRAZED BOTH ENDS. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4420-00-360-2107, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
HE1125-303
NSN: 4420-00-360-2107
FSC: 4420
CAGE: 7X677 — GENERAL MOTORS LLC DBA GENERAL MOTORS LLC (USA)
SPECIFICATIONS
materialCOPPER ALLOY TUBES
core_width11.750 INCHES NOMINAL IN
core_height19.063 INCHES NOMINAL IN
core_length7.500 INCHES NOMINAL IN
tube_quantity197
tube_attachment_methodBRAZED BOTH ENDS
effective_heat_transfer_surface_area93.1 SQUARE FEET
material_document_and_classificationMIL-C-15726,COMP 70-30 MIL SPEC SINGLE MATERIAL RESPONSE TUBES
NSN4420-00-360-2107
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available CORE ASSEMBLY,FLUID COOLER TITLE COMPONENT PN HE1125-303 MFR CORE ASSEMBLY,FLUID CO
KEY FEATURES
•
CORE WIDTH: 11.750 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-C-15726,COMP 70-30 MIL SPEC SINGLE MATERIAL RESPONSE TUBES
•
CORE LENGTH: 7.500 INCHES NOMINAL IN
•
MATERIAL: COPPER ALLOY TUBES
•
CORE HEIGHT: 19.063 INCHES NOMINAL IN
•
TUBE ATTACHMENT METHOD: BRAZED BOTH ENDS
•
TUBE QUANTITY: 197
•
EFFECTIVE HEAT TRANSFER SURFACE AREA: 93.1 SQUARE FEET
TECHNICAL CHARACTERISTICS (FLIS)
CORE WIDTH11.750 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-C-15726,COMP 70-30 MIL SPEC SINGLE MATERIAL RESPONSE TUBES
CORE LENGTH7.500 INCHES NOMINAL IN
MATERIALCOPPER ALLOY TUBES
CORE HEIGHT19.063 INCHES NOMINAL IN
TUBE ATTACHMENT METHODBRAZED BOTH ENDS
TUBE QUANTITY197
EFFECTIVE HEAT TRANSFER SURFACE AREA93.1 SQUARE FEET
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
BN0-1695Interchangeable
interchangeable cross-reference
interchangeable
850782Interchangeable
interchangeable cross-reference
interchangeable
12203Interchangeable
interchangeable cross-reference
interchangeable
1TD719Interchangeable
interchangeable cross-reference
interchangeable
A4891Interchangeable
interchangeable cross-reference
interchangeable
X9816JInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is HE1125-303?
HE1125-303 is a CORE ASSEMBLY,FLUID COOLER.
What parts can replace HE1125-303?
There are 7 known substitutes for HE1125-303: BN0-1695, 850782, 12203 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for HE1125-303?
HE1125-303 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4420-00-360-2107. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026