IAG Stage 2 Pocket Ported Heads w/ GSC S2 Cams for 08-17 STI W25 Casting. 2005-subaru-impreza-wrx sti Each package starts with brand

Each package starts with brand new WRX S20 OEM head castings

IAG's in-house honing process is able to set piston to wall clearances tighter for a quieter running engine

as well as our Fire-Lock gasket solution

About Street Series EJ Oil PanThe cast aluminum oil pan was designed with fitment for a larger variety of popular headers in mind

When paired with our Long Block Installation Packages

IAG Stage 2 Pocket Ported Heads w/ GSC S2 Cams for 08-17 STI W25 Casting. 2005-subaru-impreza-wrx sti Each package starts with brandIAG Stage 2 Pocket Port Cylinder Head Package: The head package centers around our popular CNC pocket porting program which was developed over the last several years. Pocket porting removes excess OEM casting flash and the material underneath the valves. By smoothing and blending this area under the valve seat, significant flow capability can be achieved. The IAG Stage 2 pocket ported head package starts with brand new WRX STI OEM W25 head castings,