This GrimmSpeed Donut Gasket is a perfect direct - replacement for your worn - out or lost OEM donut gasket. It's designed to fit between the lower downpipe and midpipe of the stock exhaust system for Subaru WRX (2002 - 2022), STI (2004 - 2021), 2005 - 2009 Legacy GT, 2004 - 2022 Subaru Forester, and 2005 - 2022 Subaru Outback. While many aftermarket exhaust systems use flat - style gaskets, Cobb Tuning and Borla exhaust systems need this stock 'donut' gasket. It's also required when using a downpipe adapter with a 3 - inch flat flange downpipe. Features include fiber - reinforced graphite construction, sold individually, and it replaces Subaru part number 44022AA123.
Using this GrimmSpeed Donut Gasket is easy. First, make sure your car's engine is cool. Then, locate the old donut gasket between the lower downpipe and midpipe of your Subaru's stock exhaust system and carefully remove it. Place the new GrimmSpeed Donut Gasket in the same position. Ensure it fits snugly to prevent exhaust leaks. When using Cobb Tuning or Borla exhaust systems, this gasket is a must - have. And if you're using a downpipe adapter with a 3 - inch flat flange downpipe, don't forget to install this gasket. For maintenance, periodically check the gasket for signs of wear or damage. If you notice any issues, replace it right away. Keep it clean from dirt and debris to ensure a long - lasting performance.
