Billet Turbo Drain 58mm Extension -8 MALE to -8 PORTBillet Turbo Drain 58mm Extension 8 MALE to 8 PORT The Billet Turbo Drain 58mm Extension 8 MALE to 8 PORT is a genuine Turbosmart performance part designed for reliable operation, precise fitment and proven results on street and track builds. Turbosmart's Billet Turbo Drain extension is the perfect tool for extending the existing oil drain line from turbos and other turbocharged engines. It has an 8AN male to 8AN female connection, allowing you to use