K&N BMW BM-1821 Air Filter

K&N® washable, reusable High-Flow Air Filters™ feature a layered, oiled cotton design that enhances airflow, captures contaminants, and boosts horsepower. These filters are engineered to last the lifetime of your vehicle and come with K&N's No-Hassle Lifetime Limited Warranty. Designed for easy installation into your factory air box, upgrade today for superior airflow and performance!

Features:

• Designed to increase horsepower
• Washable, reusable, and engineered to last for the life of your vehicle
• Designed to provide high airflow and exceptional filtration
• Engineered to fit easily into your factory air box
• No-Hassle Lifetime Limited Warranty
• Only needs cleaning every 50,000 miles under normal highway driving conditions
• Emissions legal in all 50 states.
• Will not void vehicle warranty