The lowest price component in this E-1 parts-list fiche is the Nut,hex.,cap 6mm.
The sub assemblies and components that make up this E-1 include this Pipe,inlet, the most expensive part.
A sample from the products for the E-1 include: Bolt,flange,sh 6x, Gasket,cyln.head (nas), O-ring,20.6x1.9, O-ring,27x2.0.