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In recent years, concerns with global environmental problems have become major issues. Environmental regulations such as fuel consumption/economy, for example, have become very stringent. On the other hand, the pursuit of a comfortable and spacious passenger compartment and reduced engine compartment room have become more progressive. Size and weight reduction of automotive components are necessary to cope with these requirements. With regards to the fuel filter, size reduction of the filter element is the key technology to achieve both component size and weight reduction. As to a fuel filter, the reduction of its size and weight can be accomplished by reducing the size of its element. We have studied this subject and have invented a new type of element structure. Additionally, we have developed a new filter paper which features a favorable combination of contaminant holding capacity and micron rating.