OTC's 6757 Injector Seal Installer and Sizer Adapters ensure replacement injectors and seals are installed correctly - this kit is designed for installation of Teflon seals onto the ends of injectors on select 1998-14 GM applications. The kit's pilot cone is placed onto the end of the injector and the seal is started over the cone - installer pushes the seal into the groove on the injector tip. Applications include: 1998-14 GM engines with SIDI single-seal injectors, found in many Buick, Cadillac, Chevrolet and GMC vehicles. Similar to OE tool number EN-48266. Value is at the core of the OTC tool and equipment portfolio. For a simple repair or the most complex drivability concern, these award-winning tools universally solve problems faster, and at better value, than any other product line available. Whether it's a specialty tool or unique piece of service equipment, OTC provides top solutions to modern automotive service challenges while increasing technicians' productivity and shop profits.