Part-number relationships
| Relationship | Reference family | Number |
|---|---|---|
| Primary Hitachi Radiator Number | Engine-cooling radiator assembly | 4403412 |
| Separate Position Radiator | Confirm machine configuration; not a direct interchange | 4403413 |
Cooling Spare Parts
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Engine-cooling radiator assembly identified by Hitachi reference 4403412. An exact-number radiator specification lists EX350-5 and EC300-5 applications, an aluminium core and a 952 x 430 x 66 mm core size. The related number 4403413 is retained only as a separate position-specific radiator reference and is not treated as a direct interchange. Confirm machine serial, radiator position, port locations, mounting tabs and core dimensions before ordering.
Send the machine model, engine model or nameplate photo so our team can confirm compatibility before shipment.
| Relationship | Reference family | Number |
|---|---|---|
| Primary Hitachi Radiator Number | Engine-cooling radiator assembly | 4403412 |
| Separate Position Radiator | Confirm machine configuration; not a direct interchange | 4403413 |
Product fitment guide
Quickly compare the reference number and recorded machine applications. Use the original photos and the checklist before ordering.
Part identification
Formatting aliases are the same number written differently. Related assemblies and remanufactured numbers are not presented as direct interchanges.
Product summary
Before ordering
Machine fitment
3 model references
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
Recorded compatible model references include Documented Hitachi model: EX350-5, Documented equipment model: EC300-5, Fitment limitation: Confirm serial, radiator position, ports, mounts and core dimensions. Confirm the complete part number and machine serial range before ordering.
No alternate number is listed for 4403412. Send the original nameplate for an alternate-number check.
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 verified references from the same system.