Stage 3 Pocket Ported Heads w/CM/+1mm Valves S20 Casting(Cams/Lifters Sold Sep) 2018-subaru-wrx sti-type ra GTIN: 00887753779328

GTIN: 00887753779328

It is well suited for both lowered street cars as well as off-road rally cars

Each bracket comes assembled with 2 additional O-rings

Internally baffled to ensure oil pickup stays submerged

The copper exhaust nuts are designed to replace the OEM exhaust nuts at the Subaru manifold to cylinder head location

Stage 3 Pocket Ported Heads w/CM/+1mm Valves S20 Casting(Cams/Lifters Sold Sep) 2018-subaru-wrx sti-type ra GTIN: 00887753779328IAG Stage 3 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 N25 head castings,