The K&N drop-in High-Flow replacement air filter for 2018–2021 Chevrolet Express 2500 4.3L V6 is a washable, reusable element engineered to fit the factory air box. It is intended to improve airflow while protecting the engine from contaminants. K&N's layered, oiled cotton media design is built for long life and performance; these drop-in filters are covered by K&N's No-Hassle Lifetime Limited Warranty for the life of the vehicle.
K&N 18-21 Chevrolet Express 2500 4.3L V6 Replacement Air Filter