Review on 🚗 Dorman 674-391 Driver Side Exhaust Manifold: Perfect Fit for Chevrolet / GMC Models by Dan Quiceno

I bought a pair of these manifolds to replace manifolds on Suburbans that were leaking badly. The driver's side cracked in the step of #5-7 skids. Revain contacted and was asked to return the part. When removed, it broke into two pieces. I got a replacement from Revain and installed it. Now torn in the same place. No more warranty as the replacement does not extend the warranty. In addition, the driver's side heat shield is knocked out because it touches the base of the engine mount under load. The driver's side gets a star because it otherwise matches the engine. The passenger manifold seems fine.