General description These fuel injectors are designed as an upgrade for Chrysler 300, RAM 1500, 2500, and 3500 models. They have been fully tested to optimize fuel delivery, resulting in improved gas mileage and throttle response compared to worn injectors. The injectors come ready to install with no modifications needed and are equipped with new components. They have been disassembled and externally cleaned to ensure optimal performance. Technical specifications Manufacturer Part Number: 05037479AA, 5037479AC Material: Plastic + Metal Color: Black Measurement allowed error: +/- 1-3 cm Compatibility and accessories For Chrysler 300 5.7L (2005-2018) For Charger 5.7L (2006-2018) For Durango 5.7L (2009-2018) For Magnum 5.7L (2006-2008) For RAM 1500 Pickup 5.7L (2009-2010, 2011-2018) For RAM 2500 Pickup 5.7L (2009-2010, 2011-2017) For RAM 3500 Pickup 5.7L (2009, 2011-2017) For Commander 5.7L (2009-2010) For Grand 5.7L (2006-2018) Installation Ready to install with no modifications needed.