twenty-nine components are shown in this Ef1800 Ef2600 Ef1200 Generator Crank - Piston - Valve - Camshaft (ef2600) exploded diagram.
A sample from the products for the Crank - Piston - Valve - Camshaft (ef2600) include: Crankshaft Assy, Piston (std) 72.93mm, Piston (1st O/s) 73.25mm, Piston, Ring Set (std).
With two applications this Bolt, Connecting Rod is the most specified part.
