These genuine OEM Subaru gaskets and hardware for the 2015-2021 Subaru WRX may be required when you remove the factory J-pipe (downpipe) from the turbo. We've seen many examples of people breaking the turbo-to-J-pipe mounting studs or stripping the nuts when attempting to remove the J-pipe. We suggest installing fresh nuts and studs, as well as the gasket, any time the J-pipe is separated from the turbo, even if they have been done recently.
Kit includes four studs, four nuts, and one gasket.