Cylinder head, Cylinder head screws, <a href="https://garage.wiki/opel/engines/gasoline/straight-4/20-l/20-nej/110-hp-at-5400-rpm-165-nm-at-2800-rpm.html" title="Opel gasoline straight-4 2.0 L 20 NEJ 110 HP at 5400 RPM, 165 N⋅m at 2800 RPM engine DIY maintenance and service manual">Opel gasoline straight-4 2.0 L 20 NEJ 110 HP at 5400 RPM, 165 N⋅m at 2800 RPM</a>, First stage

by Roman Paulov