This DC Sports header is a 4-2-1, 2 piece ceramic header with carb e.o. #D-370-1 and part #HHC5012. It has an o2 sensor still attached to it. It's missing the bolts and the gasket that goes between the 2 pieces. It does have the donut gasket where it connects to the catalytic converter. It has a few dents and scratches on the bottom and has a little mud on it. I'll clean it up when I get a chance. I'm taking $100 obo.