Find Subaru long block engines at IAG Performance for 2002–2023 WRX, STI, Legacy GT, and Forester XT models. Our inventory includes complete EJ25 and FA20 long blocks along with engine installation kits and supporting components needed to complete your Subaru engine replacement or build. Whether you're installing a replacement engine in your Subaru WRX or STI or upgrading to a built long block for improved durability and performance, IAG Performance offers the engines and install parts needed to complete your project.