Description: This is a very popular upgrade for the Jeep engine. You will have increased perofrmance, better idle, and increased gas mileage. They are a plug-and-play part. These injectors have been fully Made back to new specifications using ASNU fuel injector service equipment and rebuilt using all-new ASNU parts. Replace the original injectors with these hole injectors for better performance and less headaches then the injectors offer. Specification: Material: Rubber Color: Black Size: approx 5*2cm Package Includes: 1x FIJP003 Fuel Injector