The K&N Diesel Dryflow drop-in air filter for 2020–2026 GM Heavy Duty V8 6.6L diesel applications replaces the factory element with a washable, reusable design. Layered cotton and synthetic media improves airflow while trapping contaminants and can boost horsepower. It installs into the stock air box, is built to last for the vehicle lifespan and is backed by K&N’s No‑Hassle Lifetime Limited Warranty.
K&N 20-26 GM Heavy Duty V8-6.6L Diesel Dryflow Lifetime Engine Air Filter