Stainless Works 2016-19 Camaro Catted Headers 1-7/8in Primaries 3in Catted Leads 3/8in FlangesImprove the sound and performance on your Camaro with premium headers from Stainless Works. American Made and designed for the 2016+ Camaro SS 6. 2L, these header flanges are port matched for a seamless transition into 1 7 8? primary tubes that are CNC mandrel bent to increase air flow, and engineered to create power. These headers come with 3" slip fit collectors, as well as high flow catalytic converters that flow into 3" lead pipes, to allow an