Roush 15-17 Mustang Heat Extractor Vents  421869 Fits 2015, 2016, and 2017 Mustang GT Other applications may require cutting. 2016-2017 MY fitment does not allow for factory turn signal, found in factory extractor, to carry over Made from lightweight ABS (acrylonitrile butadiene styrene) for superior appearance, durability, and heat and impact resistance Designed with OEM CAD data to ensure precise fitment