Sprint Filter air filter is the standard performance air filter. The air filter keeps insects, dust, particles, sand, and debris out of the engine and maintains a good air-fuel mixture for optimal performance. Car air filters are available in a variety of designs, including panels, circular, and cylindrical. They are made of cotton, synthetic paper, or foam pleated material that filters the air. Air filter is an important auto part cover which can improve the fuel efficiency and enhances the engine. It is in charge of providing clean air to the engine.