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Volkswagen Passat/Audi A4 with a V630 valve vacuum hose routing diagram hopefully this helps someone One day because google doesn't help : r/Volkswagen
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Full Vacuum Hose Replacement DIY w/Pics? - AudiForums.com
Audi A4 B6 Fixing Common Vacuum Leaks (2002-2008) | Pelican Parts DIY Maintenance Article
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How To Install Audi VW Vacuum Hose Kit - Vacuum Hose Diagram
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Audi A4 B6 Fixing Common Vacuum Leaks (2002-2008) | Pelican Parts DIY Maintenance Article
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Audi A4 B6 Fixing Common Vacuum Leaks (2002-2008) | Pelican Parts DIY Maintenance Article
