Gasket fit perfectly and quality is very good!
Verified Buyer -
Gasket fit perfectly on the valve cover. It includes O-rings for cover bolts. If you have minor leak from the bolt, those O-rings should stop it also. I only need to use 1 O-ring. I saved $10 over GM OEM gasket. GM gasket does not include O-ring. My old gasket was cracked, GM require 70in/lb torque on the bolt, but I only torque to 50in/lb right now due to crack I found on old gasket. Usually, over torque on bolts cause gasket to crack. There is no oil leak around gasket after 2 weeks driving.