Manifold/header/muffler/tail Pipe problems of the 2002 Nissan Frontier

The contact owns a 2002 Nissan Frontier. The contact stated that the exhaust manifold was fractured and sending co2 through the vents while driving 25 mph and above. The contact took the vehicle to the dealer and the dealer replaced the passenger side exhaust manifold. After the repairs, the driver side exhaust manifold fractured and the contact took the vehicle back to the dealer. The dealer advised that it was common for the manifold to fracture in the particular year, make and model. The contact did not replace the driver side exhaust manifold. The failure mileage was 150,000.