Cylinder head, Cylinder head screws, All <a href="https://garage.wiki/opel/engines/gasoline/straight-4/20-l/z-20-ler/" title="Opel gasoline straight-4 2.0 L Z 20 LER engine DIY maintenance and service manual">Opel gasoline straight-4 2.0 L Z 20 LER</a> engines, First stage

by Roman Paulov