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Cooling Spare Parts

1-21723066-0 Oil Cooler Core for Isuzu 6HK1 Hitachi ZX330-3 ZX350-3

Name: 1-21723066-0 Oil Cooler Core for Isuzu 6HK1 Hitachi ZX330-3 ZX350-3
Brand: EexcavaStart
SKU: 1-21723066-0

OEM / reference1-21723066-0

SpecificationEngine Oil Cooler Core Assembly

Catalog ID67948907

Engine-oil cooler core assembly identified by Isuzu number 1-21723066-0, formatted 1217230660. Exact-number records support Isuzu 6HK1 engines in Hitachi ZX330-3, ZX350-3, ZX370 and ZW220 applications and record 72109781 as an equipment cross-reference. 8-94391738-0 identifies the related cooler housing and is not presented as a direct interchange for the core. Only the physical core views are shown. Confirm the complete number, plate stack, port end, housing and engine serial range before ordering.

Fitment status: Verified · Checked 2026-07-28

Product Type: Engine Oil Cooler Core Assembly
Product Brand: EexcavaStart
Engine Family: Isuzu 6HK1
Recorded Net Weight: 3.86 kg (catalog record)
Housing: Not included unless quoted
Supply Condition: Confirm with quotation

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Part-number relationships

Relationship	Reference family	Number
Primary Manufacturer Part Number	Isuzu engine-oil cooler core	1-21723066-0
Formatted Alias	Same number without separators	1217230660
Equipment OE Cross-Reference - Verify Configuration	Recorded Hitachi equipment reference	72109781
Related Housing - Not Direct Interchange	Oil-cooler housing from the source assembly folder	8-94391738-0

Evidence record

Source: Exact-reference evidence retained for internal audit
Evidence grade: multi-source-supported
Checked: 2026-07-28

Source URLs, catalog files and local evidence paths are stored in the protected product audit record and are not public outbound links.

Product fitment guide

Part numbers and compatible models

Quickly compare the reference number and recorded machine applications. Use the original photos and the checklist before ordering.

Part identification

Reference numbers

Primary number

1-21723066-0

Formatting alias

1217230660

Direct interchange

8-94391738-0

Other documented relationship

72109781

Formatting aliases are the same number written differently. Related assemblies and remanufactured numbers are not presented as direct interchanges.

Product summary

Engine Oil Cooler Core Assembly

Category: Cooling Spare Parts
Catalog ID: 67948907
Photo views: 2

Before ordering

Confirm these details

Match the complete part number on the original component.
Compare connectors, mounting points and visible dimensions with the product photos.
Confirm the exact machine or engine model and serial range before ordering.

Machine fitment

Compatible model references

6 model references

Engine model: Isuzu 6HK1
Excavator application: Hitachi ZX330-3
Excavator application: Hitachi ZX350-3
Excavator application: Hitachi ZX370
Wheel-loader application: Hitachi ZW220
Fitment limitation: Confirm complete number, core stack, end-port layout, housing and machine serial range

Compatibility lists identify searchable model families, not every production serial range. Confirm the original part number and machine serial number before purchase.

Quick fitment answers

Common questions about 1-21723066-0

Which machines use 1-21723066-0?

Recorded compatible model references include Engine model: Isuzu 6HK1, Excavator application: Hitachi ZX330-3, Excavator application: Hitachi ZX350-3, Excavator application: Hitachi ZX370, Wheel-loader application: Hitachi ZW220, Fitment limitation: Confirm complete number, core stack, end-port layout, housing and machine serial range. Confirm the complete part number and machine serial range before ordering.

What numbers are documented for 1-21723066-0?

Documented direct interchanges: 8-94391738-0. Formatting aliases for the same number: 1217230660.

How do I confirm 1-21723066-0 before ordering?

Match the complete part number on the original component. Compare connectors, mounting points and visible dimensions with the product photos. Confirm the exact machine or engine model and serial range before ordering. Send clear photos of the original unit and connector layout when requesting a quote.

Continue comparing recovered references from the same system.

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