Clean air is the key factor for engine to succeed ideal power, high torque, low fuel consumption and pollution emissions. SL Air filter can execute a high filtration efficiency to help engine get rid of find dust, smoke and dirt particles. Clean air can gurantee an ideal gas air mixture for combustion. And high dust holding capacity of the chosen media can provide a longer product life time. A good air filter can prevent the premature wear of engine parts like valves, cylinder working surface, piston ring and bearing even under an extrem working conditions.To ensure the perfect funtion of filter and effective filtration all filters should be replaced followed the automotive manufacturers' demonstration.