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Quality LJBB05901B 3647040 C7.1 Engine Diesel Fuel Injector factory
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Quality LJBB05901B 3647040 C7.1 Engine Diesel Fuel Injector factory
Quality LJBB05901B 3647040 C7.1 Engine Diesel Fuel Injector factory
Quality LJBB05901B 3647040 C7.1 Engine Diesel Fuel Injector factory
Quality LJBB05901B 3647040 C7.1 Engine Diesel Fuel Injector factory
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LJBB05901B 3647040 C7.1 Engine Diesel Fuel Injector

Brand Name: JIAJUE
Model Number: C7.1
Place of Origin: CHINA
Minimum Order Quantity: 1
Price: Please send mail or WhatsApp
Supply Ability: 1000PCS/MONTH
Tags

diesel engine fuel injector

fuel injectors

unit pump injector

Product Details

Part Number: LJBB05901B MOQ: 1
Highlight

C7.1 diesel fuel injector

,

LJBB05901B fuel injector

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3647040 engine fuel injector

Product Description

LJBB05901B 3647040 C7.1 Engine Diesel Fuel Injector
High-quality diesel fuel injector specifically designed for optimal performance and fuel efficiency. Part number: 0445 120 028 / 504055805.
Product Specifications
Product Name Fuel Injector
Part Number LJBB05901B
Brand Name JIAJUE
Model 3126
Condition Brand New
Availability Rich Stock
Approximate Weight 1KG
Size (per unit) 20cm x 5cm x 8cm
Delivery Methods DHL, FedEx, TNT, UPS
Warranty 3 months
Shipment Dispatched within 24-48 hours
Product Testing
Fuel injector testing and quality control process Detailed inspection of diesel fuel injector components
Related Products
Related diesel engine components and parts
Frequently Asked Questions
How do I install my fuel injector after purchasing it?
Please refer to the "Step-by-Step Installation Guide" on our product details page for detailed installation instructions.
What precautions should I take before installing my fuel injector?
The installation environment must be dust-free; lubricate the O-ring with clean machine oil before installation to prevent cutting; ensure the O-ring is installed correctly.
Why is my engine still unusable after replacing the fuel injector?
This is common due to air trapped in the high-pressure oil rail. Cycle the engine in short bursts (no more than 30 seconds) to purge air. It may take several attempts to stabilize pressure.
Is my device compatible with this part number of fuel injectors?
If unsure about compatibility, send us your Engine Serial Number (ESN) for free verification.
How to determine if your fuel injectors need replacing?
  • Cylinder Cut-out Test: Using diagnostic software (ET), shut off cylinders one by one and observe engine speed fluctuations
  • Fuel Rail Pressure Test: Check for internal leaks preventing system from building critical starting pressure
  • Back-leakage Test: Excessive back-leakage indicates severe wear of internal control valve assembly
  • Visual Inspection: Inspect fuel injector nozzles for carbon buildup, blockage, or corrosion
How long will it take to receive my package after payment?
Delivery time depends on your country, region, and customs clearance. Contact us with your address and postal code for shipping costs and estimated delivery time.
Step-by-Step Installation Guide
HEUI (Hydraulic Electronic Unit Injection) systems are extremely sensitive to contamination. A single speck of dust can cause premature failure.
1. Preparation
Clean the injector bores thoroughly. Ensure no carbon debris, old O-rings, or fuel/oil residue at the bottom of the seat. Inspect the injector sleeve for pitting or erosion.
2. Lubrication
Apply clean engine oil to the three O-rings and backup rings. Never use grease - only clean engine oil ensures seals slide in without tearing.
3. Seating the Injector
Push the injector down firmly by hand until you feel it "seat." Install the hold-down clamp and bolt.
4. Torque Specifications
Tighten the bolt to 30 N⋅m±7 N⋅m (22 lb-ft). Note: Over-tightening can crack the injector body; under-tightening causes combustion gas leakage.
5. Trim Code Programming
Locate the 6-digit alphanumeric code on the top of the injector solenoid. Use ET (Electronic Technician) software to program this code into the ECM for precise fuel delivery synchronization.
Troubleshooting Guide
Issue Root Cause Solution
Black Smoke Poor spray atomization or stuck needle valve causing dripping Inspect the air filter
Hard Start Internal leakage in injector leading to insufficient starting oil pressure Inspect injector O-rings and internal seals
Engine Misfire Faulty solenoid valve coil or worn internal valve components Inspect wiring harness connections and replace damaged injectors
Company Profile
Jiajue Machinery company overview and manufacturing facilities
Exhibition
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Factory Environment
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Packaging & Shipping
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Product Video

LJBB05901B 3647040 C7.1 Engine Diesel Fuel Injector 9

Product Highlights

LJBB05901B 3647040 C7.1 Engine Diesel Fuel Injector High-quality diesel fuel injector specifically designed for optimal performance and fuel efficiency. Part number: 0445 120 028 / 504055805. Product Specifications Product Name Fuel Injector Part Number LJBB05901B Brand Name JIAJUE Model 3126 ...

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