K&N cold air intake system for 2009–2010 Ford F-150 4.6L uses a roto-molded HDPE intake tube to increase airflow and is paired with a washable, reusable oiled cotton high-flow air filter. The oversized conical element is claimed to allow up to 100,000 miles between services under normal highway driving. The system includes a custom heat shield and is backed by K&N’s No-Hassle Lifetime Limited Warranty; see CARB status for California legality.
K&N 09-10 Ford F-150 4.6L V8 Performance Intake Kit