Air intake system, Intake manifold, <a href="https://garage.wiki/bmw/engines/diesel/straight-4/20-l/n47-d20-a/174-hp-340-nm-at-2000-rpm.html" title="BMW diesel straight-4 2.0 L N47 D20 A 174 HP, 340 N⋅m at 2000 RPM engine DIY maintenance and service manual">BMW diesel straight-4 2.0 L N47 D20 A 174 HP, 340 N⋅m at 2000 RPM</a>, Second stage

by Roman Paulov