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3-Inch Downpipe Adapter for 02-09 WRX & STi
Three-Inch Downpipe adapter for 02-09 WRX & STi This downpipe adapter for the 02-09 WRX & STi is the perfect solution to the problem of matching an 3-inch aftermarket downpipe to a catback system that uses the stock 2.5" taper. The 3-inch downpipe adapter plate allows you to install the factory donut gasket on the end of any 3-inch flat flange downpipe, to ensure a perfect seal with the factory or any other 2.5" tapered catback exhaust system (Cobb Tuning, Blitz, Borla & Greddy just to name a few).
Now you can bolt up virtually any downpipe/catback combination on the market without having to worry about exhaust leaks or installation nightmares. The 3-inch downpipe adapter requires a flat flange gasket as well as an OEM donut gasket for proper seal. Because this will modify your downpipe, longer downpipe bolts may be necessary.
Shipping costs are calculated upon checkout.

NOTE: A flat flange gasket (available separately below) and a stock donut gasket are required to install this part. Longer downpipe bolts may also be necessary.
FITMENT: 2002-2009 Subaru WRX & STi
Description: Part #: MSRP: Price: Inventory
3-inch Downpipe Adapter    11400   
$40
$35
120 in stock
Recommended Parts to go With Your 3-Inch Downpipe Adapter
3 Inch Flat Flange Exhaust Gasket3 Inch Flat Flange Exhaust Gasket
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