Re-Manufactured Cat Injectors Diesel Injector 254-4339 387-9433 387-9436 for Caterpillar Cat Excavator 330d 336D

Q1: What about your service?

A1: Timely. Be careful. Before sale, we will use our software to check the correct OE number to avoid errors. After sending, we will track the product for you every two days until you get the product.

Q2: How can I be sure the correct injector for my vehicle?

A2: There is the model number on the injector body, please check or take a photo and send it to us.

Q3: How Can We Guarantee Quality?

A3: Always a Pre-Production Sample Before Mass Production;Always Final Inspection Before Shipment. 

Q4: How to clean fuel injectors?

A4: 1.Remove the fuel injector from the engine;
       2.Connect the carburetor cleaner tank and the fuel injector with a special connector;
       3.Inject the carburetor cleaner into the fuel injector, and check the leakage of the fuel injector when it is not powered on;
     4.Energize the solenoid coil of the fuel injector intermittently, let the carburetor cleaner clean the fuel injector, and observe its spray atomization at the same time.

Q5: This product is new?

A5: We are manufacturer, so every product can guarantee personally assembly is a new product. The factory through strict test, please rest assured purchase.

Q6: How to test fuel injectors?

A6: Detect the dripping of fuel injector. Select the connector of the test instrument according to the model of the fuel injector and connect it well, then check the sealing O-ring group (replace it if it is found to be damaged), install the fuel injector on the test frame, press the oil pump key, adjust the pressure to the factory specified pressure of the tested vehicle (preferably 10% higher), and observe whether the fuel injector drips oil. If the leakage in 1min is greater than one drop (or according to the technical standard), replace the fuel injector.

Q7: Do you test all your goods before delivery?

A7: Yes, we have 100% test before delivery.