Keep the hot air out of your engine, and let cooler, denser air feed your 2017-2019 GM 6.6L Duramax L5P with the Banks Power 42249-D Ram Air Intake System With Dry Filter. Featuring a streamlined molded filter housing, the Banks Ram-Air Intake System overcomes the tight underhood area by using a large ballistic-shaped reusable air filter to allow your L5P to breathe! The enclosed air box keeps out hot, power-robbing engine air and gives you up to 852 CFM over the factory intake system giving you increased power and economy. The Banks Dry Filter is washable and reusable and does not require the use of any oil. Take full advantage of the Banks 42249 Ram-Air Intake System by combining it with the Banks Derringer Tuner for an additional 19HP!