Jeep Cherokee XJ 99-01 4.0L 4-hole upgrade injectors set 0280155923

Bosch Part No: 0280155784 02801455923

Manufacturer: Bosch

Part Number: 0280155784 02801455923

Other Part Number: U280155784-6R 53030778

Interchange Part Number: 4854181, 4667938, RL669938AB, FJ570, FJ454

Your browser does not support the video tag. This is a very popular upgrade for the 4.0 Jeep engine. You will have increased peforrmance, better idle, and increased gas mileage. They are a plug-and-play part. There are no modifications necessary.

These injectors came with 2 different part numbers, they are 0280155923. We treat these injectors with those numbers as interchangeable. They flow exactly the same.

These injectors have been fully remanufactured back to new specifications using ASNU fuel injector service equipment and rebuilt using all-new ASNU parts. these injectors come ready to install with all new o-rings and pintle caps installed. You have 30 days to return them for any reason for a full refund, and we warranty these fuel injectors against failure for five full years with unlimited mileage.

We use industry standard ASNU fuel injector servicing and calibration system. Our injector certification procedure is as follows:

1. All injectors have their coil tested

2.The injector exterior is cleaned

3. Dynamic ultrasonic cleaning breaks up deposits

4. Injectors are reverse flushed to remove any remaining deposits

5. A high pressure leak test is performed

6. Injector spray pattern and flow rates are measured

7.