These fuel injectors have been tested and exactly match the internal coil resistance and fuel flow rate of fuel injectors.The individual flow characteristics and fuel atomization of above fuel injectors are almost same and will help accelerate response time , save gasoline. Made from metal and plastic, new fuel injectors prevent fuel exposure, accurately measure fuel, control combustion characteristics and reduce harmful emissions. Accurate positioning of mounting holes to reduce deviation. Direct replacement of the fuel injector without modification, ensuring local installation and matching. It is recommended to professional replacement. Part Number:217-3445 12638530 12611545 12632255 0261500114 Fitment: 2009-2011 for Enclave 3.6L V6 2010-2011 for 3.6L V6 2008-2011 for 3.6L V6 2008-2011 for 3.6L V6 2010-2011 for 3.6L V6 2009-2011 for 3.6L V6 2009-2011 for Acadia 3.6L V6 2009-2010 for Outlook 3.6L V6 Quantity:4 PCS Colour:Black & Silver Material:Plastic+Metal Package Contents: 4 * Fuel Injector Nozzle 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.