Newcomer Racing Revised "True Round Port" & OEM Style "D Port" 1/2" 304 Stainless Steel Header Flange
We have both the upgraded OEM "D-port" style and the new revised round flanges. The revised header flange design is to be uses in conjunction with our matching "Newcomer" Copper Intake/Exhaust header/manifold gasket. We have redesigned the original Factory D-port into a true round port on all exhaust ports with a 1-3/4" slip in fit or 1-7/8" flush fit depending what primary tube size you prefer. We have purposely left material thick between the runners where the intake is seated, that being said you need to clean-up/grind the intake casting flaws to fit between the header flange properly. ***TIP***When fabricating your own header we suggest bolting the header flange down flat in as many places as possible on a head, welding everything up accordingly then check for straightness. DO NOT be scared of a curve in the flange(this is normal), once its all bolted down they will lay out great without leaks. We are kind of biased but we suggest our Stainless Steel Winged Washer Kit to finish off your custom build. Now go make something cool, send us the pics we want to see and share it!