OTC's 6756 Injector Seal Installer and Sizer Adapters ensure replacement injectors and seals are installed correctly. This kit is designed for installation of dual seals onto the ends of injectors on select 2010 and newer GM applications. For proper function, these seals must be installed into their grooves then sized to the engineered dimension, before the injectors are installed into their bores in the cylinder head. Kit includes: two seal installation pilots for each groove, seal installer driver, and compression sizer. Applications include 2010 and newer GM 1.4L, 1.5L, 2.0L, 2.4L, 2.5L, 3.0L, 3.6L, 4.3L, 5.3L, and 6.2L engines found in many Buick, Cadillac, Chevrolet and GMC vehicles. Note: Some 2014 and newer injectors have larger injector tips which require 6707 Injector Seal Installer Adapters (not included). Similar to OE tool number EN-49245. 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.