Fitment For E36 318i 19931998 (From 09011993), 318is 19931997 (From 09011993), 318ti 19951999, Z3 19961998 Key benefits and features Stabilises engine ventilation The crankcase valve manages internal airflow to prevent pressure buildup and reduce vapour accumulation. This helps maintain consistent engine performance while minimising the risk of oil leakage or unstable operation. Reduces oil vapour reentry This oil separator limits the circulation of oil mist into the intake system, helping preserve cleaner internal conditions. Reduced vapour contamination results in smoother combustion and a noticeable improvement in emissions control. Restores balanced function A reliable PCV valve is essential for maintaining smooth engine function. This component helps correct ventilation issues such as erratic idling or sluggish response, allowing for more efficient airflow regulation within the system. Use scenarios Scenario 1: Replacing a failing PCV valve on an E36 model to address erratic idling and potential oil leakage, restoring stable engine operation. Scenario 2: Installing on a vehicle where oil vapour is entering the intake, to reduce vapour, improve combustion cleanliness, and support emissions control. Scenario 3: Routine maintenance to maintain balanced engine ventilation and responsive throttle feel on compatible E36 and Z3 models.