Cylinder head, Valve cover, <a href="https://garage.wiki/vauxhall/engines/gasoline/straight-4/20-l/f4r-820/115-hp-190-nm-at-3750-rpm.html" title="Vauxhall gasoline straight-4 2.0 L F4R 820 115 HP, 190 N⋅m at 3750 RPM engine DIY maintenance and service manual">Vauxhall gasoline straight-4 2.0 L F4R 820 115 HP, 190 N⋅m at 3750 RPM</a>, Screws 13 – 20 – 22 – 23, First stage

by Roman Paulov