MAN filter is one of the subordinate brands of the German Manhumel Group, a well-known manufacturer of filters, air filters, machine filters, air conditioning filters, fuel filters are produced, and most of the original four filters of European cars are also provided by MAN brand. In the aftermarket, MAN is the biggest competitor of the original air filters.
 
Most of MAN's air filters are filter paper type, according to different models, using glue line, support liner and spiral winding technology to fix, the filter paper is treated by foaming and impregnation process to ensure a stable shape and good chemical resistance, but also impregnated with flame retardant to reduce the risk of fire in the air intake system. MAN brand air filter, cost performance is higher than the original air filter used in 4S, ordinary models are not obvious, but to more high-end models, such as Porsche Boxter, 4S original air filter is about 620 yuan, MAN brand air filter price is 500 yuan.