It replaces the EJ257 engines from 2008 to 2014 WRX STI. This engine has become totally tested and comes with a 30 Working day start up warranty. The engine has long been compression analyzed. Make sure you see all the actual engine images and the particular compression exam video clip. https://andymghfe.myparisblog.com/29716407/the-basic-principles-of-subaru-ej20-engine-for-sale