Replacement Viton O-Ring kit to suit our CNC Two piece heads. It will come with the inner smaller o-ring, and the larger outer o-ring.

These o-rings sit between the 2 parts of our billet head. They are NOT the o-rings that sit between the cylinder and head, you can see Cylinder Head O-ring kit here

Image is for illustration purposes only. You will receive the correct kit for your make and model.