Cylinder head, Cylinder head screws, <a href="https://garage.wiki/opel/engines/gasoline/straight-4/22-l/z-22-se/145-hp-at-5800-rpm-203-nm-at-4000-rpm.html" title="Opel gasoline straight-4 2.2 L Z 22 SE 145 HP at 5800 RPM, 203 N⋅m at 4000 RPM engine DIY maintenance and service manual">Opel gasoline straight-4 2.2 L Z 22 SE 145 HP at 5800 RPM, 203 N⋅m at 4000 RPM</a>, M10, First stage

by Roman Paulov