Don't let a pesky exhaust leak ruin the beautiful exhaust tone from your turbo Subaru. The Mishimoto Subaru Exhaust Adapter allows a smooth exhaust flow transition between your stock downpipe and your 3" sized exhaust. The engineers at Mishimoto know your Subaru was built for harsh climates, so they designed this adapter with 304 stainless steel material so it will never rust. This adapter installs in under 15 minutes and includes stainless steel hardware and a new 3" 2-bolt flange gasket, making installation simple. This exhaust adapter mates directly with your stock 2015 WRX exhaust flange and gets rid of any exhaust leaks when combining with the Mishimoto 2015+ WRX/STI Cat-Back Exhaust. This Mishimoto Subaru Exhaust Adapter also comes with the Mishimoto Lifetime Warranty you know and trust.