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The K&N High-Flow drop-in air filter is a washable, reusable replacement for the BMW X5 M V8 4.4L that installs into the factory air box. K&N layers oiled cotton media to improve airflow while trapping contaminants and is marketed to provide an increase in horsepower. It carries K&N's No-Hassle Lifetime Limited Warranty and is intended for long service life and repeated cleaning.
K&N 25+ BMW X5 M V8-4.4L High-Flow Replacement Air Filter
