Header flanges for 1993-1999 Northstar V8

These header flanges will fit 1993-1999 Cadillac Northstar 4.0 and 4.6L V8. Useful for making your own custom headers or custom exhaust system. They are made from laser cut 3/8" thick 304 stainless steel and will allow either stainless or mild steel tubes to be welded on to them. Set up for 1 5/8" primary tubes.