Describe: The high-flow air filter can reduce the resistance of the engine air intake, and at the same time improve the air intake per unit time and volumetric efficiency when the engine is running. The hemispherical honeycomb structure can evenly disperse the turbulent in six directions, allowing the air to form a flow. The fan-shaped part of the inner frame is designed with 16 -shaped brackets, which is relatively tough. If the mushroom head is broken open, the funnel-shaped structure can be clearly seen from the section of the arc-shaped bracket. This design creates a vacuum zone inside the mushroom head, which can forcibly inhale air, so that the area of the fan-shaped part will not be changed at all. Waste, so that the actual suction area becomes larger. Name: Automobile air filter, intake mushroom head Style: 101mm Size: height 225MM, bottom diameter 150MM, top diameter 115MM Color: As Shown Material: plastic Package Contents: 1 x ntake mushroom head Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.