Open up the potential of your 2009 - Current 5.7L Eagle GEN III HEMI® with these CNC -ported Stage 3 Cylinder Heads. Features include new improved castings, improved air flow (25 intake/20 Exhaust CFM over stock), and Mopar® Performance Springs P5160074. These components work in concert with the Mopar Performance Camshaft P5160018 for the 5.7/6.4L Hemi to provide added performance and rigidity.