750 EJ20 Closed Deck Case

The IAG 750 EJ20 Closed Deck Case is a high-performance engine block designed to provide a robust foundation for modified Subaru WRX, STI, Forester XT, and Legacy GT vehicles equipped with the EJ20 engine. This case features a closed-deck construction, which significantly enhances its strength and ability to withstand higher boost pressures and increased power output compared to an open-deck design. Engineered for demanding applications, this case is compatible with 11mm head studs, ensuring a secure and reliable seal between the cylinder heads and the block under extreme operating conditions. The product is supplied in a 'no bore and hone' state, which is a critical specification for builders aiming for precise engine assembly. This allows a qualified machine shop to hone the cylinders to the exact tolerances required for the chosen pistons and intended performance level, optimizing ring seal and engine longevity. This IAG 750 EJ20 Closed Deck Case is designed for specific Subaru models, including the WRX (typically 2002-2005 or 2005-2014 depending on source), STI (typically 2004-2021), Forester XT, and Legacy GT, all powered by the EJ20 engine. Builders should verify precise model year compatibility to ensure a direct fit. The product is typically sold as case halves and requires professional machining and assembly.