Cylinder head, Cylinder head screws, <a href="https://garage.wiki/opel/engines/gasolinenatural-gas/straight-4/16-l/z-16-yng/93-hp-at-6200-rpm-140-nm-at-4200-rpm.html" title="Opel gasoline/natural gas straight-4 1.6 L Z 16 YNG 93 HP at 6200 RPM, 140 N⋅m at 4200 RPM engine DIY maintenance and service manual">Opel gasoline/natural gas straight-4 1.6 L Z 16 YNG 93 HP at 6200 RPM, 140 N⋅m at 4200 RPM</a>, First stage

by Roman Paulov