The intake is how a car inhales and takes in the oxygen it needs. The right amount of air can mix with the right amount of gas.In a strokes process, during the first intake stroke, air from the intake manifold is sucked into each cylinder.The intake valves are then closed for the other strokes compression combustion, and exhaust. They reopen the cycle starts all over again.Mortar cone air filter moves the cold air filter outside of the engine compartment so that cooler air can be gulps in the engine for combustion.Cooler air is more dense, means more oxygen into the combustion chamber, and that means more BooM!Mortar produce air filter for increasing air flow by removing the box surrounding the breather filter so that the air can be smoother and fewer bends. It helps create an uninterrupted airflow. ALL FOR ENGINE POWER - Mortar automotive performance air intake filters are meant to devote all design purpose to increase car performance. By breathing in more cold air, engine system will acquire much more support to enhance the horsepower efficiency. CONTRIBUTE TO COMPLETE ROAR SOUNDS - With explicit induction sound by Mortar cold air filter. These car accessories firmly work with exhaust system to create the complete, powerful and attractive ''roar'' sound loop. NICE AND EASY TO INSTALL - Mortar automotive replacement air intake filters are friendly workable with most common cold air intake kit and automotive clamps in your garage. This pack contains intake filter Only. “No more bundles'' means less cost. Just SAVE your budget for the rest of your ''enthusiast checklist''. MULTIPLE CHOICES OF SIZES and COLORS - Mortar cold air intake filter pack presents various combinations of sizes and colors to match your personal desire. Make sure the correct size you need for your car, and pick out the color you want for your personal visual reference. CHOOSE ONE YOU NEED – For the 8-inch-long air filter, rather than flange ID 3.5-inch air filter, Mortar automotive replacement air intake filters also offers size 4 In. Colors are also in various options: passion red, deep blue, cool black, and forest green. Part number: LF35RED UPC 790917758629 ASIN B0972X9VRF Shape Conical Fit Type Universal Fit Brand Name Mortar Unit Count 1.0 Count Manufacturer Rapid Shift Group Model Number LF35RED Product Grade Replacement Part Manufacturer Part Number LF35RED OEM Equivalent Part Number LF35RED