Cylinder head, Valve cover, <a href="https://garage.wiki/opel/engines/gasoline/straight-4/12-l/k12b/93-hp.html" title="Opel gasoline straight-4 1.2 L K12B 93 HP engine DIY maintenance and service manual">Opel gasoline straight-4 1.2 L K12B 93 HP</a>, First stage

by Roman Paulov