Specifications: Finish: Polished Silicone Hose inlet: 3.5" Silicone Elbow Hose outlet: 3" Aluminum construction for lifetime rust free performance and heat dissipation Increased airflow and reliability by a fabricated 3.5" aluminum pipe. The larger diameter of cold side pipe also increases performance by allowing the turbocharger to spool quicker while in turn reducing EGT's. This upgraded cold side pipe is a direct replacement for your factory pipe and will not require any modifications to be installed. Included all necessary boots and clamps. .