Product details:

They contain huge tubes and filters to maximize airflow while you drive. Also, there are no choke points or accordian-style bends as found in the factory intakes. Since colder air is denser air, and air density is the key to making power, intakes draw air from the outside of the engine bay for maximum density. With so much air coming in, it's important that the intake has a great filter, and each intake comes with the highest quality oiled, reusable filter for superior filtration. To keep the air cold, each filter is contained in a cold air dam that keep the heat from the engine from affecting the incoming air. Behind each filter is a huge rotational molded plastic intake tube that draws the air, unrestricted, into the engine.