Cylinder head, Cylinder head screws, All <a href="https://garage.wiki/opel/engines/diesel/straight-4/20-l/a-20-dtr/" title="Opel diesel straight-4 2.0 L A 20 DTR engine DIY maintenance and service manual">Opel diesel straight-4 2.0 L A 20 DTR</a> engines, Ribe screws, First stage
by Roman Paulov