Diesel 2nd Hand 3306 Fuel Injector For Excavator E330B 4W7018 8N7005
Diesel 2nd Hand 3306 Fuel Injector For Excavator E330B 4W7018 8N7005
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Basic Infomation
Place of Origin: USA
Brand Name: Caterpillar
Model Number: 3306
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8N7005 2nd Hand 3306 Fuel Injector


E330B 2nd Hand 3306 Fuel Injector


4W7018 2nd Hand Diesel Fuel Injector

Payment & Shipping Terms
Packaging Details: Neutral Package or Fumigation Free
Delivery Time: 5 - 8 work days
Payment Terms: D/P, T/T
Supply Ability: 50 pieces
Product Name: Used Fuel Injector
Engine Model: 3306
Excavator Model: E330B
Part Number: 8N7005
Condition: Used
Type: Diesel Engine
Color: Same As Pictures
Material: Steel
Product Description



3306 Diesel Used Fuel Injector For Excavator E330B 4W7018 8N7005






Part Name: Fuel Injector Assy Size: Standard
Category: Spare parts Cylinders Number: 6
Engine type: Diesel Test staus: Normal
Injection: Electric Injection Injector Code: 4W7018





During cold starting, a microprocessor activates a specialized injector to add extra fuel into the mixture to facilitate smoother starts. Once the engine has warmed up, fuel from the cold start fuel injector is automatically cut off. This is different from a carburetor since you only need to block the airflow to create a richer mixture.


How do Electronic Fuel Injectors Work?


Many modern cars come with electronic injection systems. These are often denoted by the acronym EFI. In essence, these are almost the same as mechanical fuel injection systems except that they are not dependent on the amount of fuel and spring tension to open and close the valve of the injectors. What they do have are highly complex mini computers called Electronic Control Unit or ECU. The ECU performs a variety of functions, including the following.


It controls fuel mixture.
It controls idle speed.
It manages ignition timing.
It controls valve timing.

Sensors that measure air pressure, air intake temperature, accelerator position, engine temperature, and engine speed are mounted on the car’s engine. These sensors feed information to the ECU which processes these bits of data to compute the right amounts of fuel to be injected into the engine’s cylinders. The valves on the fuel injectors receive input from the ECU so that it knows exactly when to open to allow fuel to be squirted into the inlet port.


The system is so efficient that all of these complex processes – from the gathering of sensor data to its integration at the ECU level to its processing and its eventual input into the fuel injector valve – occur in a split second.


Following the journey of your fuel from the gas tank, it enters the fuel rail, thanks to an electric fuel pump that draws fuel from the tank. This is where another difference from mechanical fuel injectors comes in, by the way. Since fuel movement is controlled electronically, there is no need to have it at high pressure. The system only needs to maintain it at a constant pressure to deliver the fuel from the tank to the rail.



Diesel 2nd Hand 3306 Fuel Injector For Excavator E330B 4W7018 8N7005 0Diesel 2nd Hand 3306 Fuel Injector For Excavator E330B 4W7018 8N7005 1

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