IAG Performance IAG-ENG-H600E IAG 600 Street AW20 Cylinder Head - (No Cams, Towers, Lifters or Rockers)

The IAG 600 Cylinder Heads are designed to function as an entry-level replacement for stock OEM 2015-2021 Subaru WRX heads. If your engine has suffered a catastrophic failure which requires replacement of your cylinder heads, or if you don't have OEM heads to start with, the IAG 600 Cylinder Heads are a perfect solution. These heads also work great for cars with basic bolt-on parts up to 600 BHP. These heads include upgraded GSC standard size valves, GSC Viton Valve Stem Seals, Kelford Valve Springs with Titanium Retainers, and OEM Keepers. FA20 Heads are configured differently from their EJ counterparts. In FA20 heads the casting is split into two parts, the "lower" and the "cam towers." As the name suggests, the "Cam Towers" hold the camshafts to the cylinder head. Kelford EZ cams are available with IAG 600 Street Cylinder Heads. When Kelford cams are chosen we also include new OEM cam towers, rockers, pivots, and valve shim caps. The new castings are visually inspected and disassembled. Then the heads are fixtured in our Newen Valve Guide and Seat Machine to cut all intake and exhaust seats with a multi-angle valve job that suits the flow characteristics of GSC's standard size 34mm Intake and 29mm Exhaust valves. At this point, the heads' decks are resurfaced using our TS-3000 BlockMate, which cuts the aluminum to a smooth, even finish. Next, the heads are ultrasonically cleaned to remove debris and oils from the machining process. Finally, the heads are reassembled using GSC Stainless Intake and Exhaust Valves, GSC Viton stem seals, Kelford Dual Valve Springs with Titanium Retainers, and OEM Valve Keepers.

This Part Fits:

Year	Make	Model	Submodel	Notes
2018	Subaru	WRX	6 Man
2019	Subaru	WRX	6 Man
2020	Subaru	WRX	6 Man
2021	Subaru	WRX	6 Man
2015	Subaru	WRX	Base
2016	Subaru	WRX	Base
2017	Subaru	WRX	Base
2018	Subaru	WRX	Base
2019	Subaru	WRX	Base
2020	Subaru	WRX	Base
2021	Subaru	WRX	Base
2018	Subaru	WRX	CVT
2019	Subaru	WRX	CVT
2020	Subaru	WRX	CVT
2021	Subaru	WRX	CVT
2021	Subaru	WRX	EyeSight
2015	Subaru	WRX	Limited
2016	Subaru	WRX	Limited
2017	Subaru	WRX	Limited
2018	Subaru	WRX	Limited
2019	Subaru	WRX	Limited
2020	Subaru	WRX	Limited
2021	Subaru	WRX	Limited
2015	Subaru	WRX	Premium
2016	Subaru	WRX	Premium
2017	Subaru	WRX	Premium
2018	Subaru	WRX	Premium
2019	Subaru	WRX	Premium
2020	Subaru	WRX	Premium
2021	Subaru	WRX	Premium
2019	Subaru	WRX	Raui Edition
2017	Subaru	WRX	Sport
2018	Subaru	WRX	Sport
2019	Subaru	WRX	Sport
2020	Subaru	WRX	Sport
2021	Subaru	WRX	Sport
2017	Subaru	WRX	Sport-tech
2018	Subaru	WRX	Sport-tech
2019	Subaru	WRX	Sport-tech
2020	Subaru	WRX	Sport-tech
2021	Subaru	WRX	Sport-tech
2019	Subaru	WRX	Sport-tech RS
2020	Subaru	WRX	Sport-tech RS