Engine control, Bottom part of the control unit housing, All <a href="https://garage.wiki/volkswagen/engines/gasoline/straight-4/18-liters/cdab/" title="Volkswagen gasoline straight-4 1.8 Liters CDAB engine DIY maintenance and service manual">Volkswagen gasoline straight-4 1.8 Liters CDAB</a> engines, 15-screws variant

by Roman Paulov