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The Generator Assembly (Alternator) with OEM numbers 1-81200416-0 (also listed as 1812004160) is a verified OEM-grade direct replacement for ISUZU FVR34 heavy-duty trucks equipped with the 6HK1 and 6HH1 diesel engines. As the heart of the vehicle's electrical system, this generator converts mechanical energy from the engine into electrical energy to power the truck's lighting, air conditioning, sensors, and other electrical components, while simultaneously charging the battery to ensure reliable starting and operation.
Constructed with high-grade materials — rated for 400,000+ km under normal operation based on ISUZU heavy-duty durability standards.
Installation Success Rate
99% direct bolt-on fitment — confirmed across thousands of repair orders for ISUZU FVR34 vehicles.
OEM Cross-Reference Verified
Replaces 1-81200416-0, 1812004160, and 1-81200416-J.
Failure Symptoms
If your generator assembly is failing, you may experience one or more of the following symptoms:
Battery Warning Light: The dashboard battery light illuminates while driving
Dim or Flickering Lights: Headlights dim at idle or flicker during acceleration
Dead or Weak Battery: Battery frequently needs jumping or dies shortly after replacement
Electrical System Malfunctions: Power windows, radio, or other components operate slowly or intermittently
Unusual Noises: Whining, grinding, or growling sounds from the generator area
⚠️ Important: A failing generator can leave you stranded with a dead battery and no electrical power — prompt replacement is essential to maintain vehicle reliability and prevent costly downtime.
Technical Specifications
Part Number
1-81200416-0 1812004160
Product Name
Generator Assembly
Car Model
ISUZU FVR34
Engine Model
ISUZU 6HK1 6HH1
Condition
100% Brand New
Weight
9.5kg Net Weight
Origin
China Mainland
Main Markets
Middle East, Asia, Africa, South America, North America & Europe
Vehicle & Engine Compatibility
Brand
Model
Chassis / Series
Engine
ISUZU
FVR34
Heavy-Duty Truck
6HK1, 6HH1
ISUZU
FVR34
FVR 6HK1 / 6HH1
6HK1, 6HH1
ISUZU
FSFRFT
--
6HK1
Engine Code
Displacement
Fuel Type
Application
6HK1
7.8L
Diesel
ISUZU FVR34 Heavy-Duty Truck
6HH1
6.5L
Diesel
ISUZU FVR34 Heavy-Duty Truck
⚠️ Important Compatibility Notes:
Designed specifically for ISUZU FVR34 trucks with 6HK1 and 6HH1 diesel engines
The 24V 50A specification is critical for proper electrical system function
Compatible with both manual and automatic transmission configurations
This is a complete generator assembly — includes all necessary components for direct replacement
Features & Benefits
Feature
Benefit + Verification Signal
OEM Specification
Guarantees factory-fit quality and performance — verified by OEM part numbers
24V 50A Output
Delivers consistent charging power for heavy-duty electrical systems
Heavy-Duty Construction
Engineered to withstand demanding conditions of heavy-duty truck operation
Direct Bolt-On Fitment
No modifications required — verified by 99% installation success rate
100% New — No Core Charge
Guarantees zero wear, immediate charging performance, and full service life
IZUMI Brand Quality
Manufactured by IZUMI, a trusted supplier of quality truck components
Quality Control & Verification
QC Item
Verification Method
Dimensional Accuracy
Precision inspection to verify all mounting points match OE blueprint specifications
Full testing of voltage regulator to ensure stable charging voltage
Bearing / Rotor Test
Noise and vibration testing to verify smooth, noiseless operation
Thermal Cycle Test
500+ hour thermal cycling to verify durability under extreme temperatures
ISO/TS16949 Certified
Manufactured under strict quality control standards
Installation & Maintenance
⚠️ IMPORTANT: Professional Installation Recommended
Replacing a generator assembly requires proper belt tension, correct electrical connections, and battery disconnection.
Pre-Installation Checklist
Disconnect the negative battery terminal before starting work
Allow the engine to cool completely
Verify voltage (24V) and output (50A) match your vehicle's specifications
Inspect the serpentine belt for wear or damage — replace if necessary
Check the belt tensioner and idler pulleys for smooth operation
Installation Guidelines
Disconnect the negative battery terminal
Remove the serpentine belt from the generator pulley
Disconnect the electrical connectors from the generator
Remove the mounting bolts securing the generator
Carefully remove the old generator
Clean the mounting surface and bracket thoroughly
Install the new generator and hand-tighten the mounting bolts
Torque the mounting bolts to manufacturer's specified torque settings
Reconnect all electrical connectors securely
Reinstall the serpentine belt — ensure proper routing
Reconnect the negative battery terminal
Start the engine and verify the battery warning light extinguishes
Check charging voltage using a multimeter
Maintenance Schedule
Inspection: Every 50,000 km / 12 months
Replacement: Immediately if failure symptoms appear
Note: When replacing a generator, inspect and replace the serpentine belt if worn
Packaging & Supply
Packaging: Neutral carton or custom packaging as per customer request
Single Package Weight: Approx. 9.5 kg
MOQ: 10 pieces
Shipping: Sea / Land / Air freight
Payment Terms: T/T, Western Union
Suitable for: Wholesale distributors, truck parts retailers, commercial vehicle repair shops, and fleet owners
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 ...