Cylinder head, Cylinder head screws, <a href="https://garage.wiki/opel/engines/gasoline/v6/25-l/x-25-xe/168-hp-at-6000-rpm-227-nm-at-3200-rpm.html" title="Opel gasoline V6 2.5 L X 25 XE 168 HP at 6000 RPM, 227 N⋅m at 3200 RPM engine DIY maintenance and service manual">Opel gasoline V6 2.5 L X 25 XE 168 HP at 6000 RPM, 227 N⋅m at 3200 RPM</a>, First stage

by Roman Paulov