This Skunk2 downpipe gasket is specified for 2012 and later Honda Civic Si models and sized to fit a 2.5-inch downpipe connection. It seals the mating surface between the downpipe and adjacent exhaust components to prevent leaks and maintain exhaust routing. The listing targets Civic Si owners looking for a direct gasket solution matching the 2.5" downpipe dimension on 2012+ models.
Skunk2 12+ Honda Civic Si 2.5 inch Downpipe Gasket