The Ring-snap,18mm is the most widely applied product in the EN400A2 VULCAN 1986 CANADA / LIQUID COOLED CYLINDER/PISTON ( four times ).
The component with the lowest price in the CYLINDER/PISTON schematic is the Ring-snap,18mm.
The twelve En400a2 Vulcan 1986 Canada / Liquid Cooled Cylinder/piston component parts are all listed in this schematic.