This product is a front engine exhaust manifold down pipe for a 99-00 Civic EX, made of mild steel with a bolt-on mounting style. It is a direct replacement part with dual inlets and a single exit, suitable for manual transmission vehicles. The California Prop 65 Warning indicates that it may pose a risk for cancer and reproductive harm. The product is an OEM part from Honda, designed for specific models and years of the Civic EX, providing a reliable and high-quality option for exhaust system replacement.

The o2 sensors threads are slightly damaged. It will need to be re tapped to clean up the threads.