The Collar,fan is the most widely applied product in the GV400K1\BDJM\1089101 FLYWHEEL ( three times ).
Some items from this specific schematic: Nut,special,16mm, Bolt,flg.,6x16, Key,woodruff25x18, Nut,special,16mm(.
Of all the components that make up this Flywheel the Bolt,flg.,6x16 has the lowest price.