If you're looking for an OEM quality injector seal and line kit for your 6.4 Powerstroke, look no further than the Alliant AP0027. This kit is specifically designed for the 2008-2010 model years and must be replaced when changing injectors. 1 kit is needed per injector. With its superior quality and exacting specs, the Alliant AP0027 is the perfect solution for keeping your truck running like new.