Yimi (Guangzhou) Automotive Parts Co, Ltd
                                                                                                           
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ISUZU Subsidiary Fuel Tank Unit 8-94457778-0 OEM Standard with Integrated Fuel Level Sensor and Lightweight Design (0.27kg) for NKR 4JB1

Price Negotiable
Price: Negotiable
MOQ: 20 PCS
Delivery Time: 5-8 Work Days
Brand: YIMI
Product Description
ISUZU Subsidiary Fuel Tank 8-94457778-0 944577780 for NKR 4JB1
The ISUZU Subsidiary Fuel Tank Unit with OEM numbers 8-94457778-0 / 944577780 is a precision-engineered replacement designed for ISUZU NKR series light-duty trucks, compatible with 4JB1 diesel engines. This component serves as a supplementary fuel storage unit to the main tank, increasing the vehicle's total fuel capacity and extending driving range.
Numbering Note: This product number 8-94457778-0 / 944577780 has the associated number 8944577780. Some sources also indie compatibility with ISUZU NHR models. Please verify the specific number based on actual vehicle configuration.
ISUZU Subsidiary Fuel Tank Unit 8-94457778-0
Part Number: 8-94457778-0 944577780
Product Name: Subsidiary Fuel Tank
Car Model: NKR
Engine Model: 4JB1
Condition: 100% Brand New
Origin: China Mainland
Main Market: Middle East, Asia, Africa, South America, North America & Europe
Material: High-strength aluminum alloy & precision bearings
Installation: Direct OEM replacement
Quality Standard: OEM equivalent / ISO quality control
Working Principle
The subsidiary fuel tank unit is mounted on the chassis side or outside the frame side rails. Its working principle includes:
  • Fuel Storage: Serves as a supplement to the main tank, storing additional diesel fuel
  • Fuel Supply: Connected to the main tank or fuel supply system via fuel lines, featuring dual-tank switching or fuel transfer systems
  • Level Monitoring: Integrates a Fuel Level Sensor to monitor fuel level in real-time
Failure Symptoms
Symptom Probable Cause
Inaccurate or no fuel level reading on instrument panel Failed fuel level sensor in subsidiary tank
Noticeably reduced driving range; auxiliary fuel unavailable Blocked internal lines or failed fuel pump
Diesel smell under vehicle or visible fuel leakage Rusted/cracked tank housing or aged/worn seals
Engine stalls or loses power when switching to auxiliary tank Blocked fuel supply line or failed fuel pump
Visual inspection shows deformed, severely rusted, or damaged housing Long-term use or impact damage
Verifiable Data
  • Product Net Weight: 0.27 kg
  • Part Name: UNIT; FUEL TANK,SUB (Subsidiary Fuel Tank Unit)
  • HS Code: 902690000
  • Compatible Model: ISUZU NKR series
  • Extended Compatibility: ISUZU NHR series
  • Compatible Engine: ISUZU 4JB1 diesel engine
  • Condition: Brand New — 100% quality inspected
  • Warranty: 3 months
  • Minimum Order Quantity: Small quantities accepted
  • Delivery Time: 15–20 days after deposit
  • Packaging Options: Neutral box / Color box / Custom brand packaging
Vehicle & Engine Compatibility
Brand Model Series Compatible Engine Notes
ISUZU NKR 4JB1 Light-duty truck
ISUZU NHR 4JB1 Light-duty truck
ISUZU NKR55 4JB1 Light-duty truck
Important Fitment Warnings
  • Number Confirmation: Verify the specific number on the original part before ordering
  • Model Confirmation: Confirm vehicle model before ordering
  • Associated Components: Inspect fuel lines, fuel filter, and tank mounting brackets
  • Post-Installation Leak Test: Fuel system leak test is mandatory after installation
  • Electrical Connection: Ensure proper electrical connector attachment for accurate gauge readings
  • Professional Installation: Professional installation is recommended
Features & Benefits
OEM Standard Design
Manufactured to ISUZU original specifiions — ensures perfect fitment for NKR/NHR models
Integrated Fuel Level Sensor
Real-time fuel level monitoring with accurate signal transmission to the instrument panel
Lightweight Design (0.27kg)
Reduces vehicle weight — contributes to improved fuel economy and payload capacity
Specifically Designed for ISUZU 4JB1 Engine
Perfectly matched to NKR/NHR series fuel supply systems
100% Factory Quality Inspection
Every piece undergoes strict quality inspection — ensures zero-defect delivery
Flexible Supply
Small quantity orders accepted — meets diverse procurement needs
Quality Control & Verifiion
QC Item Inspection Method Acceptance Criterion
Housing integrity Visual + pressure test No cracks, deformation, or pinholes
Fuel seal integrity Leak test bench No leakage; stable pressure retention
Level sensor resistance Multimeter Standard resistance range (empty/full)
Level sensor signal output Special test bench Stable, linear signal output
Product dimensional accuracy Special gauges / Calipers Per OEM installation dimensions
Product weight Precision scale 0.27 kg ± tolerance
IMPORTANT SAFETY NOTICE: The subsidiary fuel tank is a critical fuel system component involving fuel storage and supply. Improper handling may cause fuel leakage or fire risk. Professional installation is recommended.
Installation Guidelines
Preparation: Confirm installation position, prepare tools including socket wrench, fuel line wrench, jack + safety stands
Removing Old Subsidiary Tank:
  • Park vehicle on level surface, engage parking brake, and securely support with jack stands
  • Disconnect fuel lines connecting subsidiary tank to main tank/fuel system
  • Disconnect fuel level sensor electrical connector
  • Remove mounting bracket bolts or fasteners
  • Carefully remove the old subsidiary tank
Installing New Subsidiary Tank:
  • Clean mounting surface thoroughly
  • Position the new subsidiary tank correctly and install mounting brackets
  • Reconnect fuel lines — ensure tight, kink-free connections
  • Connect fuel level sensor electrical connector
  • Add diesel and check all connections for leaks
  • Start engine and verify fuel level gauge reading
Packaging & Supply
Packaging Neutral box / Color box / Custom brand packaging
Quantity per package 1 pc/box (standard shipment packaging)
Product Net Weight 0.27 kg
Place of Origin China
Minimum Order Quantity Small quantities accepted
Delivery Time 15–20 days after deposit
Warranty 3 months

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Have questions about our products or want to discuss a custom order? Our team is ready to help you.

Company Yimi (Guangzhou) Automotive Parts Co, Ltd
Location Unit 1313, Building 5, Changsheng DDP Fashion Center, No. 17 Dachi Road, Tancun, Shijing Subdistrict, Baiyun District, Guangzhou City.
Contact Person James

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