The Injen Hydro Shield is a race-proven pre filter that is placed over a cold air filter as a protective aid. They are specially designed and manufactured from the highest quality polyester to ensure a longer lifespan. The Hydro Shield has perforations within its structure that promote the filtering of dirt (.005 and larger) from the much needed cool, fresh air heading to the manifold. As a protective mechanism, the Hydro Shield is ideal for preventing debris from entering the cold air intake and possibly causing damage and build up of dirt. Another benefit is the Hydro Shield works directly with the cold air intake filter acting as pre-filter and to help promote a longer lifespan for both products. The Hydro Shield was specifically made to work in conjunction with aftermarket cold air filters that source air from outside of the heat and gas-filled engine bed.

The most ingenious and sophisticated feature of the Hydro Shield is the fact that it has been thoroughly treated with a special water-repelling agent during the manufacturing process. This process makes the fabric hydrophobic and thus allows it to repel water, guaranteeing constant and reliable airflow as well as achieving a horsepower advantage. As a cautionary note, the Hydro Shield is water repellent and not water proof and therefore its effectiveness to complete its functions will diminish with an overall submersion. Nonetheless, this addition will give you an added peace of mind that no dirt will enter your intake, as it's able to handle heavy rain and choking dust storms.

The shape and design allows for quick removal so that cleaning the reusable polyester body of the Hydro Shield is an effortless process rather than some tedious chore. Available in three different colors - red, blue and black - the Hydro Shield is not just functional but also an aesthetically pleasing addition to your engine. Injen Technologies endorses the Hydro Shield with a lifetime warranty, letting you know that their confidence in the quality and durability of this product is extremely high. The Hydro Shield is best suited with the Injen's cold air intake filter system, though it can be fitted to alternative filters. To guarantee a secure fit with another brand filter, the Hydro Shield comes in a variety of different sizes. This will ensure you can adapt the Hydro Shield to any cold air filter system.