Roush Performance Products 421828 Cold Air Intake Kit, 1 Pack 2015-2017 Mustang 3.7L Roush V6 cold air kit is the perfect addition to any 2015 V6 Mustang A more efficient air-intake than the stock air filter assembly, ROUSH's cold air kits unlock latent power potential and fuel efficiency that would otherwise be restricted Custom calibration is not required and a noticeable increase of 10.5 HP and 9 lo-fi of torque is possible