The Gates emission control hose for 2006 BMW 325i 6-cyl 3.0L connects the oil separator to the intake to route separated crankcase vapors into the intake tract. It replaces cracked or degraded separator hoses that can allow oil carryover or impair ventilation. Installing the correct replacement restores sealing in the ventilation circuit and helps reduce oil contamination and emissions faults.

Gates 2006 BMW 325I 6-Cyl. 3.0L Oil Separator To Intake Emission Control Hose