The component with the lowest price in the 031 - COOLING SYSTEM schematic is the Screw.
The 031 - Cooling System assembly is constructed from several parts from which the Squirter Unit is the most expensive.
This schematic depicts all components used in the Superbike 2016 My16 (superbike 959 Panigale Abs) D220-00016 031 - Cooling System partslist.