5 product photos · Select a thumbnail to change the main view.
Excavator Alternators
Alternator identified by Isuzu number 1-87618284-0, formatted 1876182840. The exact owned unit is marked 24V 50A, and exact-number cross-reference records support the Isuzu 6HK1 engine with Hitachi ZX330/ZX350-family and JCB JS290/JS300/JS330/JS360 applications. Catalog records pair 1812006032, 8-98341397-0 and Hitachi 4489830 with this family. Confirm the full number, connector, mounting ears, pulley grooves and machine serial range.
Fitment status: Verified · Checked 2026-07-28Send the machine model, engine model or nameplate photo so our team can confirm compatibility before shipment.
| Relationship | Reference family | Number |
|---|---|---|
| Primary Manufacturer Part Number | Isuzu alternator | 1-87618284-0 |
| Formatted Alias | Same number without separators | 1876182840 |
| Catalog Cross-Reference | Isuzu alternator family | 1-81200603-2 |
| Formatted Alias | Same cross-reference without separators | 1812006032 |
| Catalog Cross-Reference | Isuzu alternator family | 8-98341397-0 |
| Equipment Manufacturer Number | Hitachi application reference | 4489830 |
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
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
5 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 Engine model: Isuzu 6HK1, Machine family: Hitachi ZX330 / ZX350 / ZX360 / ZX370, Machine family: JCB JS290 / JS300 / JS330 / JS360 / JS370, Machine family: John Deere 330C / 370C, Fitment limitation: Confirm connector, mounting ears, pulley grooves and machine serial range. Confirm the complete part number and machine serial range before ordering.
Manufacturer number: 4489830. Formatting aliases for the same number: 1876182840, 1812006032.
Confirm voltage and rated amperage against the original alternator label. Compare mounting ears, pulley type and pulley-groove count. Check plug shape, terminal position and regulator connection. Send clear photos of the original unit and connector layout when requesting a quote.
Continue comparing recovered references from the same system.
Excavator Alternators1100583 Alternator for Excavator and Diesel Equipment1100583
Excavator Alternators11201735 12V Alternator for Excavator and Diesel Equipment11201735
Excavator Alternators5527658958 12V Alternator for Excavator and Diesel Equipment5527658958
Excavator Alternators86536918 12V Alternator for Excavator and Diesel Equipment86536918
