1、The high flow air filter reduces the resistance of the engine intake air while increasing the intake air volume and volumetric efficiency per unit time while the engine is running. 2、The semi-spherical honeycomb structure allows the chaotic airflow to be evenly dispersed in six directions, allowing the air to form a smooth flow. 3、The fan-shaped portion of the inner skeleton is designed with 16 radial stents, which is relatively tough. 4、If the mushroom head filter is broken up, the funnel-like structure can be clearly seen from the section of the circular arc-shaped bracket. This design creates a vacuum zone inside the mushroom head and can forcibly absorb air. 5、Not wasting the area of the fan-shaped portion, to increase the actual suction area. Features: The high flow air filter reduces the resistance of the engine intake air while increasing the intake air volume and volumetric efficiency per unit time while the engine is running. The semi-spherical honeycomb structure allows the chaotic airflow to be evenly dispersed in six directions, allowing the air to form a smooth flow. The fan-shaped portion of the inner skeleton is designed with 16 radial stents, which is relatively tough. If the mushroom head filter is broken up, the funnel-like structure can be clearly seen from the section of the circular arc-shaped bracket. This design creates a vacuum zone inside the mushroom head and can forcibly absorb air. Not wasting the area of the fan-shaped portion, to increase the actual suction area. Specification: Condition: Brand new Material: Iron Color: Color: Carbon grain, red, blue(optional) Size: Caliber: Approx.63mm/2.5in Height: Approx.150mm/5.9in Bottom Diameter: Approx.90mm/3.5in Top Diameter: Approx.120mm/4.7in Fitment: suitable for all vehicles with an intake of 63mm Package List: 1 x Intake Filter 1 x Clamp 1 x Adapter Gasket Note: Please check dimensions before ordering, to see if it is suitable for your car.