Description: MAXIMUM PERFORMANCE Our cold air intake for the 2003-2008 Dodge Ram 2500 / 3500 3.7L was engineered to minimize air restriction with a custom enclosure that protects the filter from engine heat and dirt. This intake flows 46% better than stock. PROTECT YOUR ENGINE This kit comes with a massive, highly-efficient air filter which results in better performance and protects your engine. Available in either 8-layer Cotton Cleanable or Dry Extendable Media. CHOOSE YOUR AIRFLOW Our kit has two air inlets that feed an insane amount of cool air to your engine. While making use of the stock housing inlet, we also added a secondary snorkel pulling air from the fender liner. A plug is provided if you don't want to pull air from the snorkel.