Cylinder head, Cylinder head screws, <a href="https://garage.wiki/opel/engines/diesel/straight-4/20-l/b-20-dth/168-hp-at-4000-rpm-400-nm-at-1750-rpm.html" title="Opel diesel straight-4 2.0 L B 20 DTH 168 HP at 4000 RPM, 400 N⋅m at 1750 RPM engine DIY maintenance and service manual">Opel diesel straight-4 2.0 L B 20 DTH 168 HP at 4000 RPM, 400 N⋅m at 1750 RPM</a>, First stage

by Roman Paulov