HS08SW4GT3. Fitment Information: This exhaust fits 2008 - 2010 Subaru WRX Sedans and 2009 - 2013 Subaru Forester XT. Features: Comes with new gaskets and hardware. Constructed from high - quality 304 stainless steel. Has a 3 - inch piping diameter and 4 - inch stainless dual exhaust tips. Exhaust hangers are welded onto OEM locations for a direct fit. Note: This is for the narrow - body sedan. If your narrow - body sedan has the stock downpipe, you'll need to add an adapter to ensure a leak - free fit.

Using this Invidia Q300 exhaust is easy. First, make sure your vehicle is one of the compatible models - a 2008 - 2010 Subaru WRX Sedan, 2011 - 2014 Subaru STI Sedan, or 2009 - 2013 Subaru Forester XT, and it's a narrow - body sedan. If you have the stock downpipe, install the adapter before attaching the exhaust to avoid leaks. When it comes to maintenance, regularly check the gaskets and hardware for any signs of wear or looseness. You can clean the 304 stainless - steel parts with a mild stainless - steel cleaner to keep it looking great. Just remember, this exhaust is specifically for narrow - body sedans, so double - check your vehicle type before installation.