Excavator Engine Parts

8-97105790-0 S85NJ 12V Glow Plug Timer for Isuzu 4JG2 4LB1

Q: What numbers are documented for 8-97105790-0?

Primary Equipment Part Number: 8-97105790-0. Same-number Formatting Variant: 8971057900. Manufacturer Model: S85NJ. Direct Cross-Reference: 8-97105790-1 / 8971057901. Direct Cross-Reference: 8-97040501-0 / 8970405010. Direct Cross-Reference: 8970405020 / 8970405021. Equipment Cross-Reference: 21152-42013. Equipment Cross-Reference: 129901-77960. Relationship labels distinguish formatting aliases, direct interchanges, remanufactured references and related assemblies.

Q: How do I confirm 8-97105790-0 before ordering?

Match the complete part number, compare the connector or mounting arrangement with the product photos, and confirm the machine or engine model and serial range. Send clear photos of the original unit when requesting a quote.

8-97105790-0 S85NJ 12V Glow Plug Timer for Isuzu 4JG2 4LB1, OEM/reference 8-97105790-0, 12V Six-Pin QOS-3 Glow Plug Timer, product view 1

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OEM / reference8-97105790-0

Specification12V Six-Pin QOS-3 Glow Plug Timer

Catalog ID65513318

Six-pin diesel glow-plug timer identified by Isuzu number 8-97105790-0, compact number 8971057900 and NGK model S85NJ. The physical label on the owned unit reads Q.G.S. CONTROLLER DC12V and 897105 7900. Isuzu and PartSouq records name the component TIMER; QOS-3, while an electrical cross-reference catalog lists the 12V Isuzu, NGK, TCM and Yanmar reference family. Repeated exact-number application records support Isuzu 4JG2/4LB1 and selected Hitachi compact excavators. Confirm the label, six-pin connector and machine serial before ordering.

Product Type: Diesel glow-plug timer / QOS controller
System Voltage: 12V DC
Connector: Six-pin; compare physical terminal layout
Manufacturer Marking: NGK S85NJ
Catalog Name: TIMER; QOS-3
Condition: New replacement electrical component

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Part-number relationships

Relationship	Reference family	Number
Primary Equipment Part Number	Isuzu QOS-3 timer	8-97105790-0
Same-number Formatting Variant	Compact Isuzu formatting	8971057900
Manufacturer Model	NGK model printed on physical label	S85NJ
Direct Cross-Reference	12V Isuzu timer catalog	8-97105790-1 / 8971057901
Direct Cross-Reference	12V Isuzu timer catalog	8-97040501-0 / 8970405010
Direct Cross-Reference	12V Isuzu timer family	8970405020 / 8970405021
Equipment Cross-Reference	TCM timer reference	21152-42013
Equipment Cross-Reference	Yanmar timer reference	129901-77960

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

8-97105790-0

Manufacturer number

S85NJ

Formatting alias

8971057900

Direct interchange

8-97105790-1 / 8971057901
8-97040501-0 / 8970405010
8970405020 / 8970405021

Other documented relationship

21152-42013
129901-77960

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

Product summary

12V Six-Pin QOS-3 Glow Plug Timer

Category: Excavator Engine Parts
Catalog ID: 65513318
Photo views: 5

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

3 model references

Supported engine families: Isuzu 4JG2 / 4LB1
Supported Hitachi equipment family: EG30; ZX27U / ZX30U / ZX35U / ZX40U / ZX50U / ZX55UR / ZX55UR-HHE
Fitment limitation: Confirm 12V label, S85NJ/8971057900 reference, six-pin connector and machine serial

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 8-97105790-0

Which machines use 8-97105790-0?

Recorded compatible model references include Supported engine families: Isuzu 4JG2 / 4LB1, Supported Hitachi equipment family: EG30; ZX27U / ZX30U / ZX35U / ZX40U / ZX50U / ZX55UR / ZX55UR-HHE, Fitment limitation: Confirm 12V label, S85NJ/8971057900 reference, six-pin connector and machine serial. Confirm the complete part number and machine serial range before ordering.

What numbers are documented for 8-97105790-0?

Documented direct interchanges: 8-97105790-1 / 8971057901, 8-97040501-0 / 8970405010, 8970405020 / 8970405021. Manufacturer number: S85NJ. Formatting aliases for the same number: 8971057900.

How do I confirm 8-97105790-0 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.

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