AUTOSTAR AC Filter for Mercedes Benz GL-Class X166 2012-2020 Auto Star is an essential part of your car's air conditioning system. It is designed to clean and purify the air that enters your car through the air conditioner. This filter helps improve air quality, making your driving experience more comfortable and healthier. It traps dust, pollen, and allergens, ensuring you breathe cleaner air. Additionally, it enhances the performance and longevity of the AC system. Replacing your AC filter regularly is simple and crucial to maintaining a new and efficient AC system.