Function: Made of high quality . , Anti-, Providing effective wear resistance and aging resistance, and not wear and leak over time. Used for replacing the fuel injector seals. This tool set helps install the seal on the injector for leak-free operation. For System used for 2010-later LF1 3.6L V6 and for LAF 2.0L Ecotec has 2 seals in the tip of the injector. These seals must be installed into their grooves, and then sized to the engineered dimension before the injectors are installed into their bores in the cylinder head. EN-49245 must be used to install the seals correctly and to they are sized correctly for leak-free operation. Applicable models: EN-49245 EN-51105 18683AA000 18683A. for 2.0L & 3.6L engines with for Fuel Injectors 2010 - 2017, for 2.0L, 2.5L, 5.3L & 6.2L engines with for Fuel injectors 2012 - 2017, for 7 2016, for 2.0L & 2.4L turbo engines 2014 - 2019. Installation Steps Tips: 1. Cut off the old seal near the tip of the injector. 2. Place the seal installer guide(pilot cone) on the tip of the injector. 3. Push the seal on the installer guide(pilot cone). 4. Use the seal installer to push the seal into the groove of the injector. 5. Use the seal sizer tool to compress the seal to the correct size. Note: Installation guide not included, Please check as much as possible to make sure the item is what you need. Tips: The product may be updated constantly ,Due To Different Batches, The Actual Product May Have Slight Differences Or Color Differences, Which Does Not Affect Use Color: Black Material: Metal Package Contents: 1 x EN-49245 Fuel Injector Seals Tools set Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.