When you purchase a genuine Infiniti in-cabin micro filter you can rest assured that you are receiving the same quality as all of our other OEM Infiniti parts. Only Infiniti made in-cabin micro filters are manufactured with your vehicle's specifications in mind. Not only does your in-cabin micro filter protect you and your family from outside pollutants such as dust, allergens and vehicle exhaust but it also helps keep mold and foul odors from creating a very uncomfortable driving experience. It is recommended that your in-cabin micro filter be replaced every 12,000 miles (or annually) to relieve added strain that a dirty in-cabin micro filter can put on your HVAC blower motor and other various components. If you have any questions regarding your Infiniti in-cabin micro filter please feel free to email us.