Volkswagen Golf GTI Mk IV Turbo Replacement (1999-2005) - Pelican Parts DIY Maintenance Article
I am very confused, after looking at all different mk4 1.8t diagrams, nothing matches up with my engine. I can't figure out where the hose should go. Any ideas? : r/MK4GTI
Audi A4 Questions - hello 2003 audi a4 1.8t had all my vacuum lines canceled so i seen a v... - CarGurus
How To Install Audi VW Vacuum Hose Kit - Vacuum Hose Diagram
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Need help finding OEM part number for N249/N112 mk4 1.8T AWP : r/Volkswagen
Audi A4 B6 Fixing Common Vacuum Leaks (2002-2008) | Pelican Parts DIY Maintenance Article
important* Vacuum line information | VW Beetle Forum