Contents of this maintenance kit: - 1x Engine / Compressor Primary Air Filter Cartridge - 1x Engine Oil Filter - 1x Fuel Pre-filter (Coarse inline screen) - 1x Primary Fuel Filter Element (water separator) - 2x Secondary Fuel Filter - 1x Compressor Primary Air Filter - 1x Compressor Oil Filter - 1x Return filter element - 1x Hydraulic oil Presure Filter Element - 1x Filter Element for Water Seperator - 1x Air Filter Safety Cartridge