Cylinder head, Cylinder head screws, <a href="https://garage.wiki/opel/engines/diesel/straight-6/25-l/y-25-dt/148-hp-at-4000-rpm-300-nm-at-1750-rpm.html" title="Opel diesel straight-6 2.5 L Y 25 DT 148 HP at 4000 RPM, 300 N⋅m at 1750 RPM engine DIY maintenance and service manual">Opel diesel straight-6 2.5 L Y 25 DT 148 HP at 4000 RPM, 300 N⋅m at 1750 RPM</a>, First stage

by Roman Paulov