That looks to be a rather common cast iron intake manifold. Those are about as durable as concrete. What makes you think there is an issue with the intake that you have on the car? Your first post mentioned that you thought it was cracked,,,and your mechanic repaired cracks in the intake,,, what exactly did the mechanic do? The cast iron intakes do not have a history of cracking. The cast iron exhaust manifolds have a cracking issue, but not the intakes.