Cylinder head, Cylinder head screws, <a href="https://garage.wiki/opel/engines/gasoline/straight-4/12-l/k12b/84-hp-at-5500-rpm-114-nm-at-4400-rpm.html" title="Opel gasoline straight-4 1.2 L K12B 84 HP at 5500 RPM, 114 N⋅m at 4400 RPM engine DIY maintenance and service manual">Opel gasoline straight-4 1.2 L K12B 84 HP at 5500 RPM, 114 N⋅m at 4400 RPM</a>, First stage

by Roman Paulov