The FEL PRO Valve Gasket I used for my automotive engine was amazing. Through trial and error I found that it was the perfect fit for my performance car .The gasket was easy to install and provided a perfect seal which kept my engine running smoothly. It is a durable product that can withstand high temperatures easily. The only con is that it is a bit expensive compared to other gaskets but the quality is worth the price. Overall, I highly RECOMMEND this automotive gasket for anyone looking for a reliable and high-quality product..