The K&N Diesel Dryflow replacement engine air filter for 2011–2016 GM Heavy Duty 6.6L diesels is a washable, reusable direct-fit filter composed of layered cotton and synthetic media engineered to improve airflow while capturing contaminants. Designed as a drop-in replacement for the factory air box, it is reusable for the life of the vehicle and backed by K&N's No-Hassle Lifetime Limited Warranty.
K&N 11-16 GM Heavy Duty 6.6L Diesel Replacement Dryflow Air Filter