PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

8502122Core Assembly,fluid Cooler

General Motors Corp · NSN 4420-00-360-2126 · FSC 4420 · No Item Name Available
Verified by PartsTable
NSN 4420-00-360-2126 — this item is cataloged by the U.S. Government under National Stock Number 4420-00-360-2126. Primary manufacturer part number: 8502122.
Features
  • Core Assembly,fluid Cooler — FSC 4420
  • Core Height: 2.875 INCHES NOMINAL IN
  • Style Designator: STRAIGHT PLAIN TUBE, OBLONG
  • Material Document and Classification: MIL-C-15726,COMP 70-30 MIL SPEC SINGLE MATERIAL RESPONSE TUBES
  • Material: COPPER ALLOY TUBES
  • Effective Heat Transfer Surface Area: 1.7 SQUARE FEET
  • Tube Attachment Method: BRAZED BOTH ENDS
  • Tube Quantity: 8
Applications
  • Applications requiring Copper Alloy Tubes construction
General Description

The Core Assembly,fluid Cooler, cataloged under National Stock Number 4420-00-360-2126, 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 General Motors Corp. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 13 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4420-00-360-2126
Primary Part Number8502122
Item NameCore Assembly,fluid Cooler
FSC / FSG4420 / 44 — No Item Name Available
ManufacturerGeneral Motors Corp
StatusACTIVE
Core Height2.875 INCHES NOMINAL IN
Style DesignatorSTRAIGHT PLAIN TUBE, OBLONG
Material Document and ClassificationMIL-C-15726,COMP 70-30 MIL SPEC SINGLE MATERIAL RESPONSE TUBES
MaterialCOPPER ALLOY TUBES
Effective Heat Transfer Surface Area1.7 SQUARE FEET
Tube Attachment MethodBRAZED BOTH ENDS
Tube Quantity8
Heat Transfer MethodINDIRECT
Core Length8.375 INCHES NOMINAL IN
Core Width3.000 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
4520-00-131-1358770-1 INTERCHANGEABLE
Heating Element,electrical,nonim
Hotstart Sales, Llc
5940-00-231-94837701 INTERCHANGEABLE
Post,binding,electrical
Eby Group, Llc, the Dba Eby Company Div Eby Company
6145-00-401-24047701 INTERCHANGEABLE
Wire,electrical
Belden Wire and Cable Co Wire and Cable Office
5975-00-426-8755MFL-75 INTERCHANGEABLE
Elbow,electrical Conduit
Egs Electrical Group Appleton Div
2920-00-960-0482 INTERCHANGEABLE
Regulator,engine Generator
5945-00-998-2814 INTERCHANGEABLE
Solenoid,electrical
5970-01-101-3968242 3/4IN INTERCHANGEABLE
Tape,insulation,electrical
Nitto, Inc.
5998-01-123-4026 INTERCHANGEABLE
Circuit Card Assembly
5315-01-127-3647XB-770-1 INTERCHANGEABLE
Pin,cotter
Saf-Holland, Inc.
5930-01-155-1248770-1 INTERCHANGEABLE
Switch,inertia
Emerson Electric Co White Rodgers Co Div
Cross-Reference Index
Part NumberManufacturer
DE43386 General Motors Llc Dba General Motors Llc (USA)
HN3106142 General Motors Corp (USA)
HN8502122 General Motors Corp (USA)
HN8502122 General Motors Llc Dba General Motors Llc (USA)
HN3106142 General Motors Llc Dba General Motors Llc (USA)
MILC15730TYPEB Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
HE1107-1 General Motors Corp (USA)
7701 General Motors Corp (USA)
HN8508197 General Motors Corp (USA)
DE43386 General Motors Corp (USA)
HE1107-1 General Motors Llc Dba General Motors Llc (USA)
HN8508197 General Motors Llc Dba General Motors Llc (USA)
8502122 PRIMARY General Motors Corp (USA)
Related Parts
4520-00-131-1358INTERCHANGEABLE
HEATING ELEMENT,ELECTRICAL,NONIM
770-1
5940-00-231-9483INTERCHANGEABLE
POST,BINDING,ELECTRICAL
7701
6145-00-401-2404INTERCHANGEABLE
WIRE,ELECTRICAL
7701
5975-00-426-8755INTERCHANGEABLE
ELBOW,ELECTRICAL CONDUIT
MFL-75
2920-00-960-0482INTERCHANGEABLE
REGULATOR,ENGINE GENERATOR
5945-00-998-2814INTERCHANGEABLE
SOLENOID,ELECTRICAL
5970-01-101-3968INTERCHANGEABLE
TAPE,INSULATION,ELECTRICAL
242 3/4IN
5998-01-123-4026INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
5315-01-127-3647INTERCHANGEABLE
PIN,COTTER
XB-770-1
5930-01-155-1248INTERCHANGEABLE
SWITCH,INERTIA
770-1
6240-01-257-5697INTERCHANGEABLE
LAMP,INCANDESCENT
2030-01-361-7430INTERCHANGEABLE
CONSOLE,BRIDGE CONTROL
770-1

Frequently Asked Questions

What is NSN 4420-00-360-2126?

NSN 4420-00-360-2126 is a Core Assembly,fluid Cooler, manufactured by General Motors Corp, classified under FSC 4420 (No Item Name Available). Status: active.

What are the part numbers for NSN 4420-00-360-2126?

NSN 4420-00-360-2126 has 13 cross-referenced part numbers: DE43386 (General Motors Llc Dba General Motors Llc), HN3106142 (General Motors Corp), HN8502122 (General Motors Corp), HN8502122 (General Motors Llc Dba General Motors Llc), HN3106142 (General Motors Llc Dba General Motors Llc) and 8 more.

What NSN replaces 4420-00-360-2126?

There are 12 known substitutes for 4420-00-360-2126: 4520-00-131-1358, 5940-00-231-9483, 6145-00-401-2404 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 8502122?

Key specifications for 8502122: Core Height: 2.875 INCHES NOMINAL IN; Style Designator: STRAIGHT PLAIN TUBE, OBLONG; Material Document and Classification: MIL-C-15726,COMP 70-30 MIL SPEC SINGLE MATERIAL RESPONSE TUBES; Material: COPPER ALLOY TUBES. 10 total characteristics are documented in the Federal Logistics Information System.

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