CSF BMW E9X M3 Race-Spec Oil CoolerProduct Information All aluminum construction. 20% increase in cooling efficiency. High performance oil cooler designed in collaboration with VF engineering, featuring a turbulated heavy duty bar plate design for the most reliable & durable oil cooler available. Heat is a major factor in high performance vehicles. When operating fluids are pushed to the limit, they require additional cooling over stock applications. This high performance cooler from