Cylinder head, Cylinder head screws, <a href="https://garage.wiki/opel/engines/diesel/straight-4/25-l/4-ja1/75-hp.html" title="Opel diesel straight-4 2.5 L 4 JA1 75 HP engine DIY maintenance and service manual">Opel diesel straight-4 2.5 L 4 JA1 75 HP</a>, First stage

by Roman Paulov