Subaru OEM Head Gasket WRX (2006-2014) STI (2007-2018) MINI Cooper 3 +15mm offset with a

3 +15mm offset with a 73

In this case

they tested 26 different intake configurations with over 140 dyno pulls

Will not work with a stock airbox

The downpipe is constructed of 304 stainless steel with a large bell mouth

Subaru OEM Head Gasket WRX (2006-2014) STI (2007-2018) MINI Cooper 3 +15mm offset with aThe OEM Subaru EJ255 2006 2014 WRX 2007 2018 STI 2005 2009 Legacy GT head gasket is multi layered steel. Subaru 2. 5L engines built on 06 2006 and before require a different part number than 2. 5L engines built on 07 2006 and after. Note: Gaskets sold individually. 02 07 WRX STI stock head gaskets are . 6mm (. 023 in) thick. Please refer to your drivers side door jam to determine the build date of your vehicle.