The Tube,outlet is the most widely applied product in the GSF1200SA 1998 (W) (E17 E18 E22 E34) AIR CLEANER ( four times ).
Some items from this specific schematic: Screw 6x12, Clip, Cushion, Screw(5x14).
The component with the lowest price in the AIR CLEANER schematic is the Screw.