1009845B Hengst Tank Mounted Return Line Filter w/ Size 0040 Filter Element (R928040177, 10TEN0040-PWR6A00-V2,2-V-R3-F)1009845B Hengst Tank Mounted Return Line Filter w Size 0040 Filter Element (R928040177, 10TEN0040 PWR6A00 V2,2 V R3 F); Tank Mounted return line filters are designed for installation on fluid tanks. Their function is to separate solid materials from fluids. Features: Special highly efficient filer materials; Filtration of very fine particles and high dirt holding capacity across a broad pressure differential range High collapse resistance of filter