Review on High-Quality GM 12617944 Exhaust Manifold Gasket for Optimal Performance by Chris Munns

Excellent manifold gasket replacement! Put a manifold on my Tahoe and bought Felpro gaskets and they have failed me with all sorts of leaks. I've been an auto mechanic for over 20 years and have usually replaced the factory replacement first time but learned the lesson. These seals were sealed the first time and the bolts were checked again after 200km, they seem to be holding up!