CPV code 42124150 designates Parts of hydraulic power engines or motors in the Common Procurement Vocabulary (CPV 2008), the EU classification used to describe the subject of public contracts.
42124150 is a leaf code — the most specific level of its branch — so it can be used directly as the main CPV code of a contract notice. If it does not quite fit, check the neighbouring codes under 42124100 (Parts of engines or motors).