This Turbosmart Profiled Weld Flange Alloy - 38mm is the perfect profile adapter for Turbosmart Plumb Back, Dual Port, Vee Port Pro, and Supersonic BOVs. With a curved design that fits easily with round intercooler plumbing, this profiled weld flange is easy to install and requires welding. Turbosmart's profiled weld flange is made from high-quality alloy material and offers excellent durability and long-term performance. It features an effective seal between the BOV and other components in your vehicle's intake system for improved airflow and engine power. So get Turbosmart's profiled weld flange today to ensure maximum efficiency on every drive!