Engine control, Bottom part of the control unit housing, <a href="https://garage.wiki/volkswagen/engines/gasoline/straight-4/18-liters/cpra/168-hp.html" title="Volkswagen gasoline straight-4 1.8 Liters CPRA 168 HP engine DIY maintenance and service manual">Volkswagen gasoline straight-4 1.8 Liters CPRA 168 HP</a>, 15-screws variant, First stage

by Roman Paulov