IAG 550 Street Cylinder Heads Package

• 2005-2009 Subaru | Legacy GT
• 2002–2014 Subaru | WRX
• 2004–2021 Subaru | WRX STI

The IAG 550 Cylinder Heads are designed to function as an entry-level replacement for stock OEM 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 550 Cylinder Heads are a perfect solution. These heads also work great for cars with basic bolt-on parts up to 550 BHP.

• Part Number: IAG-ENG-H550DE
• Fitment: 2002-2014 WRX, 2004-2021 STI, 2005-2009 LGT, 2004-2013 FXT
• Includes (x2) brand new Subaru OEM WRX or STI cylinder head castings
• Multi-angle valve job, machined cam lobe clearance, resurface and ultrasonic cleaning
• GSC standard size valves, GSC Viton valve stem seals, IAG Stage 1 valve springs with titanium retainers, and OEM keepers
• GSC S1 camshafts are available with OEM valve lifter buckets
• Optional chamber modification service for EJ20 heads to allow use on EJ25 short blocks

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