Dodge Durango 2004-2007 4.7L. Dodge Ram 1500 Pickup 2004-2007 4.7L. Dodge Dakota 2004-2007 4.7L. Chrysler Aspen 2007 4.7L. IMPORTANT NOTICE 1pcs fuel injectors as pictures show. Function: It forms a mixture In the intake manifold to improve the fuel efficiency of the engine.