Using this gasket our team found that it was an excellent fit for our high-performance automotive engine. The gasket provided a perfect seal, which eliminated any oil leaks from the valve cover. It IS durable, reliable, and held up well under extreme conditions. The only con was that it was slightly more expensive than some other brands, but the quality and performance made it worth the investment. Overall, we highly recommend this gasket for anyone looking to improve their engines performance..See full review