This semicircular seal fits into the back of the head to seal against the valve cover on most EJ motors. The stock rubber part can get brittle and break over time; it can also blow out under high crankcase pressure conditions. Our aluminum version fit snugly and will never wear out or blow out. The Mach V logo is lasered on over a nice anodized black finish.
Fits all 2002-2014 WRX, 2004-2007 STI, Legacy and Outback 2005-2009, Forester XT 2003-2013. Does NOT fit 2008+ STI, since those motors have no such half-moon holes.
Sold as a set of four.