On this parts fiche the Dowel,pin,8x14 is the most specified component.
The component with the lowest price in the LEFT CRANKCASE COVER/ WATER PUMP schematic is the Bolt,flange,6x12.
A sample from the products for the Left Crankcase Cover/ Water Pump include: Bolt,flange,6x25, Bolt,flange,6x50, Oil Seal,8x18x5, Bolt,flange,6x40.