Use to remove an existing electronic injector sleeve from the cylinder of the 9.0L diesel engine.Install the compression screw into the injector bushing. When installing the tool, the tool extender section must Securely positioned on bushing ID.Use a support wrench to hold the upper part of the compression screw and tighten the lower part of the screw at the same time.OEM no.ref:JDG10631High Quality After Market ToolShip from US