This bolt-on exhaust adapter flange ensures proper connection of most factory exhaust piping to aftermarket 3" exhaust components. When installing a 3" exhaust component to factory exhaust piping without an adapter such as this, exhaust leaks are very likely. This adapter helps to seal the junction between the two different diameter pipes, resulting in a tight and leak-free connection. This product was designed for Subaru applications but is perfect for many 3" exhaust installations on other applications as well.
