Add power and fun while still protecting your investment. Our new intake kit for the 6.4L demonstrates a 23.10% increase in airflow over the stock intake while still maintaining a 99.50% efficiency level with an oiled filter. The dry filter produces a 21.32% increase in airflow and is 99.47% efficient when tested at 593 CFM. A mountain of dust and our 1/2 million dollar lab is how far we've gone to make sure your engine is protected. Easy to install with a fitment that rivals the OE intake. Securely mounts to the stock location. Generally, installs take 30 minutes or less. We test our kits to the same ISO 5011 Test Standard used by the automakers. See the test results tab above to see how we stack up against the competition. When its cool out, remove the included plug from the secondary box opening, and engulf an insane amount of air. With the secondary port open, airflow is increased by 6.9% with a cleanable filter and 4.9% with a dry filter. We provided you with a port in the airbox to install the heat tube for those driving in extreme cold weather conditions. A mounting port is provided for those who don't need to use the heating tube. We offer intakes with two types of filters: cotton (cleanable) or dry (disposable). Since you are not sacrificing performance with either choice, the decision comes down to would you rather throw away the filter or clean it. The part numbers for intakes with a dry filter end with 'D'.