Genuine OEM Volkswagen Fuel Tank Breather Line, part number 4M4201995C. This line is a critical component of the fuel system, designed to allow the fuel tank to safely vent pressure and fuel vapors. It is typically routed from the fuel tank to the evaporative emissions system. Constructed from materials resistant to fuel and its vapors, it ensures a leak-free and compliant system. Genuine OEM fuel system components ensure correct material composition and precise routing, vital for maintaining emissions compliance and preventing fuel system issues.