These 1972 BMW 2002 Cabriolet Convertible 2-Door 2.0L Clear Plastic Fuel Filters are unique by design. They have two shoulders / steps on both the in and out side of the filter, The small step is 1/4" and the larger step is 3/8" allowing for many uses, Just slide the fuel line on until it is snug then clamp it down. We have sold filters for nearly 30 Years , The manufacturing Process is commitment to have certified ISO/TS 16949:2002, which will replace the QS9000 certification currently in all plants. We recognize that the filters we make are only as good as the materials we use to make them. Rigorous supplier standards, including ISO9001 or QS9000 certification and stringent sourcing standards, assure materials of uncompromised quality, We Offer in several bulk packages, Please browse our listings for the filters that fit your application.