The most reasonably priced component used on the Ew50 2004 1s11 Poland 1c1s1-300g1 Crankshaft & Piston is the Circlip.
Check out any of the fifteen Crankshaft & Piston components enlisted.
The Crankshaft & Piston is made up of components including this Crankshaft Assy which is the most expensive.