The OTC Crank Sprocket Installer, No. 6355, is designed to install the crankshaft sprocket. The hardened forcing screw may also be used to replace the original 12mm bolt. The tool includes an additional bolt for the 2.7L engine. The Crank Sprocket Installer is for use on Chrysler engines: 2006 2.0L DOHC, 2006 to 2010 2.4L, 2.7L, 3.2L and 3.5L, and 2007 to 2011 4.0L engines.