Fitment: For E46 E39 E38 E36 323Ci. For more applicable models and years, please refer to the Product description. Optimizes air intake control This intake manifold valve regulates airflow within the intake system to promote smoother engine performance and enables precise air delivery during acceleration, improving overall throttle response. Supports efficient engine operation A functional engine air intake valve helps maintain the fuelair balance by adjusting airflow at different RPMs, contributing to stable and responsive engine performance. Reduces hesitation and idle fluctuation When functioning correctly, this valve helps eliminate rough idling or delayed acceleration and improves control over the engine airflow actuator for better drivability in urban and highway driving. Key attributes Function: regulates intake air for smoother performance and better throttle response Compatibility: designed for listed BMW models (E46, E39, E38, E36 323Ci) Size and material: refer to product specifications for exact dimensions and construction Performance: supports stable fuelair balance, improved throttle response, and improved drivability Use scenarios Urban commuting: smoother idle and more predictable response during frequent stopandgo traffic Highway driving: more immediate throttle response when merging or overtaking Cold starts and steady RPM operation: reduced idle fluctuations and steadier engine behavior across RPM changes