BMW Billet Ventilation Oil CapOur new PCV Oil Cap for various BMW engine codes! Crank case ventilation is very important for many reasons but mostly to prevent contamination and to control pressure from excess gasses. We use a 10 ORB threaded vent to allow many different ways to route your ventilation. We recommend the Radium Engineering banjo as it is low profile and hood clearance is not an issue. Manufactured from 6061 Aluminum and using a oil resistant seal to ensure a tight
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