The Gates emission control hose for 2000-2005 Volkswagen Passat 4-cyl 1.8L connects the oil separator to the PCV valve to route separated vapors back into the intake and support crankcase ventilation. It replaces cracked or plugged separator-to-PCV hoses that can allow oil carryover or poor ventilation. Installing the correct replacement restores sealing and helps reduce oil contamination and emissions faults.

Gates 00-05 Volkswagen Passat 4-Cyl. 1.8L Oil Separator To PCV Valve Emission Control Hose