Exhaust Upgrade for 2002-2021 WRX, STI & More

Mishimoto Exhaust Adapter, Stock Downpipe to 3in Exhaust, made to fit the 2002-2021 Subaru WRX / 2004-2021 STI / 2004-2018 Forester / 2005-2009 Outback / 2005-2013 Legacy. Don't let a pesky exhaust leak ruin the beautiful exhaust tone from your turbo Subaru.

Performance Gains

The Mishimoto Subaru Exhaust Adapter allows a smooth exhaust flow transition between your stock downpipe and your 3in sized exhaust.

Fits These Vehicles

Features & Specs

• 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 3in 2-bolt flange gasket, making installation simple.
• Warranty: Please contact us for warranty details on this product.
• Brand: Mishimoto
• Part number: MISMMEXH-ADAP-SDAE

Straight from SubiSpeed

Exhaust parts are best installed with new gaskets and hardware. Confirm your emissions requirements before swapping anything upstream of the catalytic converter.