K&N washable, reusable High-Flow Air Filters feature a state-of-the-art design of layered, oiled cotton media engineered to improve airflow and capture contaminants, and are designed to provide an increase in horsepower. Each performance air filter is reusable, engineered to last for the entire lifespan of your vehicle, and backed by K&N's 10-Year/Million Mile Limited Warranty. K&N drop-in replacement filters are designed to install easily into your factory air box. Upgrade today and start enjoying superior airflow and superior performance from K&N's most popular product!

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
10-Year/Million Mile Limited Warranty
Only needs cleaning every 50,000 miles under normal highway driving conditions
Will not void vehicle warranty

CROSS REFERENCES:
Mazda AJ5713240
Mazda AJ5713Z40
Mazda AJ5713Z409U
Mazda RF4F13240