IAG Performance IAG-ENG-H115WL3 IAG 1150 CNC Ported Drag W25 Cylinder Head - GSC S3 Cam & Kelford Lifters

The IAG 1150 CNC Ported Drag Cylinder Heads are designed for drag racing and competition. These fully CNC ported heads provide a significant upgrade in long term performance over the IAG 950 heads. These heads work great for cars where getting the most power with maximum reliability is the goal. The IAG 1150 heads are the best heads available for high-horsepower drag racing. They are designed to support up to 1150 BHP with supporting mods. These heads include upgraded Ferrea Valves, GSC Viton Valve Stem Seals, Upgraded GSC Valve Guides, Ferrea Dual Drag Valve Springs with Titanium Retainers, and Ferrea Keepers. GSC S2 or S3 Camshafts are available with Kelford DLC Coated valve lifter buckets. We also offer an optional chamber modification service (see below) for EJ20 heads to allow use on EJ25 short blocks. Each IAG 1150 Cylinder Head Set starts with new OEM castings from Subaru of America. The first step is to select your Year and Model of vehicle so that we may provide you with the right castings to fit your project. Next, you'll select whether or not you want to include our optional GSC camshaft package. If selected, these heads will include new GSC S2 or S3 Camshafts and Kelford DLC Coated valve lifter buckets for valve adjustment.

This Part Fits:

Year	Make	Model	Submodel	Notes
2008	Subaru	Impreza	WRX STI
2009	Subaru	Impreza	WRX STI
2010	Subaru	Impreza	WRX STI
2011	Subaru	Impreza	WRX STI
2012	Subaru	Impreza	WRX STI
2013	Subaru	Impreza	WRX STI
2014	Subaru	Impreza	WRX STI
2011	Subaru	Impreza	WRX STI Limited
2012	Subaru	Impreza	WRX STI Limited
2013	Subaru	Impreza	WRX STI Limited
2014	Subaru	Impreza	WRX STI Limited
2010	Subaru	Impreza	WRX STI Special Edition
2012	Subaru	WRX	STI
2013	Subaru	WRX	STI
2014	Subaru	WRX	STI
2015	Subaru	WRX	STI
2016	Subaru	WRX	STI
2013	Subaru	WRX STI	Base
2014	Subaru	WRX STI	Base
2015	Subaru	WRX STI	Base
2016	Subaru	WRX STI	Base
2017	Subaru	WRX STI	Base
2018	Subaru	WRX STI	Base
2015	Subaru	WRX STI	Launch Edition
2015	Subaru	WRX STI	Limited
2016	Subaru	WRX STI	Limited
2017	Subaru	WRX STI	Limited
2018	Subaru	WRX STI	Limited
2016	Subaru	WRX STI	Series.HyperBlue
2017	Subaru	WRX STI	Sport
2018	Subaru	WRX STI	Sport
2018	Subaru	WRX STI	STI
2014	Subaru	WRX STI	Tsurugi Edition
2018	Subaru	WRX STI	Type RA