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The Gates emission control hose for 2000-2005 Buick Century V6 3.1L connects the PCV valve to the intake to route crankcase vapors and maintain emission controls. It replaces hardened or damaged lines that cause vacuum leaks and oil contamination. Installing the correct replacement restores sealing in the ventilation circuit and helps prevent rough idle and related emissions codes.
Gates 00-05 Buick Century V-6 3.1L PCV Valve To Intake Emission Control Hose