Features: 1.Increase intake air flow, filter air impurities, and make your engine breathe more smoothly. 2.Unique shape, reduce the resistance of the engine air intake, improve the air intake per unit time and volume efficiency when the engine is running. 3.Avoid the dust suspended in the air from being sucked into the cylinder, reduce the wear of the piston group and the cylinder. 4.Installed in front of the carburetor or intake pipe to filter out dust and sand particles in the air, insure sufficient and clean air enters the cylinder. 5.Easy to install, no complicated tools required, convenient for using. Specification: Condition: 100% Brand New_x000D_ Item Type: Air Filter_x000D_ Material: Stainless Steel_x000D_ Optional Color: Blue, Bluing_x000D_ Filter Length: Approx. 150mm/5.9in_x000D_ Bottom Width: Approx. 150mm/5.9in_x000D_ Interface Diameter: Approx. 78mm/3.1in_x000D_ Applicable models: Universal for car, can be installed as long as the size is suitable_x000D_ _x000D_ _x000D_ The role of the air filter:_x000D_ The engine must suck a large amount of air during the work. If the air is not filtered, the suspended dust in the air is sucked into the cylinder, which will accelerate the wear of the piston group and the cylinder. Larger particles entering between the piston and the cylinder can cause a serious "pull cylinder" phenomenon, which is especially serious in dry and sandy working environments. The air filter is installed in front of the carburetor or intake pipe, and plays a role in filtering dust and sand particles from the air, ensuring that a sufficient amount of clean air enters the cylinder!