The twenty-one Ma50m 1992 2fv England 262fv-310e1 Crankshaft. Piston component parts are all listed in this schematic.
With two applications this Brg,r-b 6203c3 40mm Ky (2e9) is the most specified part.
The Crankshaft. Piston is made up of components including this Crank Assy which is the most expensive.