2 pieces are the entire seal around the outside and the gasket with 4 circles around the spark plug holes. Need a little RTV on the 2 half circles, both front and back.essex0727 wrote:I know the gasket comes in two pieces the piece that goes around the perimeter of the whole thing and the other part includes the two half circles in the front of the valve cover correct. also what kind of sealer do i need is it like a silicone deal.