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Verified OEM Direct-Fit Excavator Engine Protection Switch designed for ISUZU 6WG1 diesel engines, primarily installed in Hitachi ZAXIS series excavators.
Product Overview
This oil pressure switch monitors engine oil pressure in real time, ensuring proper lubrication system operation and triggering alarm or protection signals when oil pressure deviates from normal range, preventing engine damage due to insufficient lubrication.
Function & Operation
Mounted on the engine main oil gallery, the switch contains a diaphragm that displaces under oil pressure, making or breaking an electrical circuit when pressure reaches the set threshold of approximately 0.3 bar. This sends a signal to the dashboard or ECU to trigger warning lamps or engine protection programs when oil pressure drops below safe values.
Fitment Confirmed: Compatible with ZAXIS series ZX450 / ZX470-3 / ZX650 / ZX650-3 / ZX850 / ZX870-3 / ZX470-3G as well as SH800 / CX800B
Certification: CE certified with quality inspection before shipment
Product Details
Part Number
8-98249723-0 8982497230
Product Name
Oil Pressure Switch
Condition
100% Brand New
Origin
China Mainland
Quality Standard
OEM equivalent / ISO quality control
Failure Symptoms
Oil pressure warning lamp stays on continuously or flashes frequently
Warning lamp does not extinguish after engine start
Oil pressure gauge reading abnormally high or low
Oil seepage at switch terminal connection
False low-pressure alarm under normal oil pressure conditions
Vehicle & Engine Compatibility
Brand
Model
Engine
Hitachi
ZX450
6WG1
Hitachi
ZX450-3
6WG1T
Hitachi
ZX470-3
6WG1T
Hitachi
ZX470-3G
6WG1
Hitachi
ZX650
6WG1
Hitachi
ZX650-3
6WG1
Hitachi
ZX850
6WG1
Hitachi
ZX870-3
6WG1
Sumitomo
SH800
6WG1
Case
CX800B
6WG1
Important: Please provide machine model and engine serial number before ordering for fitment verification. Different production batches of 6WG1 engines may use different oil pressure switch part numbers.
Features & Benefits
Fits 6WG1 diesel engine
Specifically designed for large construction machinery; reliable oil pressure monitoring
Multi-OEM number compatibility
One part covers multiple OEM numbers; simplifies inventory management
M10*1.25 standard thread
Direct installation; no adapter required
CE certified
Meets European market access standards
Metal housing
Vibration and heat resistant for severe excavator conditions
Installation Guidelines
IMPORTANT: Ensure engine is cooled before installation to avoid contact with hot components.
Disconnect battery negative terminal for safe operation
Place oil drain pan below switch before removing old switch to prevent oil spill
Clean area around mounting hole; inspect threads for damage
Apply small amount of sealant to new switch threads; hand-thread until seated
Tighten with wrench to specified torque (consult ISUZU 6WG1 workshop manual)
Connect harness connector; start engine and check for leaks
Observe dashboard oil pressure warning lamp status to confirm normal operation
Maintenance Schedule
Inspect switch appearance, wiring, and sealing at every engine service interval
Check oil pressure warning function every 500 hours or 6 months
Replace immediately upon oil seepage, abnormal alarm, or reading deviation
Yimi (Guangzhou) Automotive Parts Co., Ltd.
Located in Guangzhou—the economic and transportation hub of Southern China—we are a specialized supplier and exporter with over 20 years of experience in the automotive parts industry. We focus on the production and sales of high-quality ... Yimi (Guangzhou) Automotive Parts Co., Ltd.
Located in Guangzhou—the economic and transportation hub of Southern China—we are a specialized supplier and exporter with over 20 years of experience in the automotive parts industry. We focus on the production and sales of high-quality ...