Parts: $95 - $187. The average cost for an exhaust manifold replacement is between $410 to $585. Labor costs are estimated between $315 to $398 while parts are priced between $95 to $187.Get a personalized estimate based on your location and specific car.Estimate does not include taxes and fees. Best Practices. When replacing the exhaust manifold gaskets, new bolts, studs, and gaskets should be used. It is common for the exhaust manifold bolts or studs to break prior to, or during removal of an exhaust manifold.