The Injen Hydroshield, part number 1121BLK, is designed to protect and extend the performance of your air filter, including models like the SuperNano-Web and 8-Layer oiled cotton gauze filters. Constructed from a proprietary base media and treated with a hydrophobic water-repellent coating, this Hydroshield effectively diverts damaging contaminants that can clog your filter and reduce airflow. Its UV-resistant and puncture-resistant properties ensure durability under various conditions, while its elasticity allows it to return to the original shape after servicing, maintaining a secure fit over your air filter. This feature helps in preventing debris from reaching the filter media, thereby extending the intervals between service and reducing maintenance costs. The Hydroshield's design ensures minimal impact on airflow while providing maximum protection against water, dirt, and other airborne pollutants, which can compromise engine performance and horsepower. With a size of approximately 5 inches in base width, 7 inches in height, and 4 inches at the top, it fits a variety of automotive air intake systems, offering a reliable and cost-effective solution for vehicle owners seeking enhanced filtration. The Hydroshield's ease of installation and durable construction make it an excellent addition to any performance or stock air intake system, ensuring cleaner air intake and sustained engine efficiency. <b>Features:</b> * Hydrophobic water-repellent coating: Prevents water and contaminants from reaching the filter media * UV resistant: Ensures durability in sunlight exposure * Puncture resistant: Protects against physical damage * Elasticity: Returns to original shape after servicing for a secure fit * Diverts damaging debris: Extends filter lifespan and maintains airflow