Genuine OEM Volkswagen PCV Valve, part number 03D103765F. This Positive Crankcase Ventilation (PCV) valve plays a vital role in the engine's emissions system by regulating crankcase pressure and recirculating unburnt gases back into the intake manifold. It helps prevent oil leaks, sludge buildup, and maintains proper engine ventilation. Constructed from durable plastic, this valve is lightweight at approximately 0.074 kg and features specific hose connections for precise routing. A genuine OEM PCV valve ensures accurate calibration, proper flow rates, and resistance to engine contaminants, which are critical for maintaining engine health and emissions compliance.