Cylinder head, Cylinder head screws, <a href="https://garage.wiki/audi/engines/diesel/straight-4/20-l/bna/134-hp.html" title="Audi diesel straight-4 2.0 L BNA 134 HP engine DIY maintenance and service manual">Audi diesel straight-4 2.0 L BNA 134 HP</a>, BNA engine, First stage

by Roman Paulov