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Excavator Spare Parts
24V starter safety relay identified by Isuzu number 1-82553039-1 and compact alias 1825530391. A Hitachi component specification identifies 1825530391 as Starter Relay 2 at 24V, while catalog records cover Isuzu 4HK1, 6WG1 and related engine families. Four matching owned relay-and-harness views are retained; the catalog render was excluded. Confirm the connector plugs, bracket, wire colors and machine serial range before ordering.
Fitment status: Verified · Checked 2026-08-02Send the machine model, engine model or nameplate photo so our team can confirm compatibility before shipment.
| Relationship | Reference family | Number |
|---|---|---|
| Primary Equipment Part Number | Isuzu starter safety relay | 1-82553039-1 |
| Formatted Alias | Same number without separators | 1825530391 |
| Formatted Alias | Same number with catalog grouping | 1-82553-039-1 |
| Archived Relay Reference - Verify Individually | Not published as an unconditional interchange | 0-25000-783-2 |
Fitment data verified. Exact-reference evidence is retained in the protected product audit record · Checked 2026-08-02.
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
4 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 Cataloged engine families: Isuzu 4HK1 / 6WG1, Additional cataloged families: 4BG1 / 4BD1 / 4JB1 / 4JJ1 / 4LE1 / 6BG1 / 6HK1 / 6SD1, Equipment family: Hitachi and Deere excavators using the listed relay, Fitment limitation: Confirm 24V, plugs, bracket, wiring and machine serial. Confirm the complete part number and machine serial range before ordering.
Formatting aliases for the same number: 1825530391, 1-82553-039-1.
Confirm voltage and power rating against the original starter nameplate. Compare mounting-hole pattern, flange position and overall body orientation. Confirm pinion tooth count and rotation where those values are specified. Send clear photos of the original unit and connector layout when requesting a quote.
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