We recommend that you also check other parts of the engine before installation. Fuel Injector 23710-26010 2371026010 For Toyota For AURIS For AVENSIS For COROLLA RAV4. Replacing damaged, dirty, clogged or leaking injectors can improve performance and reduce fuel consumption. It can reduce carbon deposits, repair cylinder shortages, suppress unstable idle speed, weak acceleration, difficult starting and other problems, and improve engine efficiency. Professional installation is highly recommended.