BMW 850i Exhaust Manifold Replacement Cost.
Learn More About Exhaust Manifold Replacement Cost
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. Broken bolts or studs will require additional effort to remove and this expense would be in addition to the RepairPal estimate above.
When the exhaust manifold gaskets are leaking, you will hear a ticking or tapping noise, especially when the engine is cold. The noise may partially or totally disappear when the engine is warmed up.
An exhaust leak can have an effect on the fuel mixture and cause the Check Engine Light to come on. The exhaust leak should be repaired before replacing any other parts related to an incorrect fuel mixture.
We do not recommend resurfacing a warped exhaust manifold, as the manifold will be prone to warping and cracking.