IAG 900 Closed Deck Long Block Engine w/ Stage 4 Heads & GSC S3 Cams for 04-07 STI. 2020-subaru-wrx sti-sport Once all the new guides

Once all the new guides are in place they are diamond-honed in our honing station

1/8th inch NPT plug is also included in the event that the sensor port is not used

improves crankcase ventilation and is compatible with standard ECU calibrations

The baffle is engineered to be removable for future upgrades and easy cleaning

The Street Series Engine Mount Bushing Kit is designed specifically for IAG Subaru EJ Engine Mounts

IAG 900 Closed Deck Long Block Engine w/ Stage 4 Heads & GSC S3 Cams for 04-07 STI. 2020-subaru-wrx sti-sport Once all the new guidesIAG 900 EJ25 Closed Deck Long Block w Stage 4 Heads: The IAG Performance Hand Built Subaru EJ25 Closed Deck Long Block Engine Packages are a complete, valve cover to valve cover, crate engine. These engines offer easy installation for customers seeking a complete "drop in" engine package for their WRX, STI, Forester XT or Legacy GT. The Long Blocks feature a combo of our proven IAG Performance Closed Deck Short Block and Cylinder Head packages, along