After I put it to the test I was thoroughly impressed with this gasket .The seal was tight and held up to the high pressures of my performance car. The gasket is very well MADE and it fits perfectly in the cylinder head. The only downside i found was the price, which is a bit higher than some other gaskets on the market. However, the quality and durability of this gasket make it worth the investment for any serious automotive enthusiast. Highly recommend..