First impressions are not everything, but they sure leave a lasting image. With its stylish high-gloss blue powder coated finish is the Sinister Intake Bridge designed for the 2011-2015 GM 6.6L Duramax! This intake bridge is more than meets the eye with its precision CNC machined billet aluminum flanges and mandrel bent tubing that optimizes airflow, churning out every ounce of performance your 6.6L has to offer. With an uptake in horsepower and torque, this intake bridge sports a larger diameter air path allowing denser and colder air to course through your engine, giving you an increase in performance and turbo spool. Fully gas-tungsten arc welded otherwise known as TIG-welding, the aluminum flanges are also CNC machined and TIG-welded to bring about a intake bridge that is tailor made to securely fit to your 2011-2015 GM 6.6L Duramax. Installation of the Sinister Intake Bridge allows users to retain factory smog equipment and includes a blue anodized aluminum resonator block-off plate!