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On average, the cost for a BMW M3 Exhaust Manifold Repair is $529 with $301 for parts and $228 for labor. Prices may vary depending on your location.
| Car | Service | Estimate | Shop/Dealer Price |
|---|---|---|---|
| 1997 BMW M3L6-3.2L | Service typeExhaust Manifold Repair | Estimate$1542.66 | Shop/Dealer Price$1913.35 - $2800.39 |
| 2003 BMW M3L6-3.2L | Service typeExhaust Manifold Repair | Estimate$1607.45 | Shop/Dealer Price$2018.80 - $2841.46 |
| 2004 BMW M3L6-3.2L | Service typeExhaust Manifold Repair | Estimate$1607.45 | Shop/Dealer Price$2018.77 - $2841.40 |
| 1998 BMW M3L6-3.2L | Service typeExhaust Manifold Repair | Estimate$1462.66 | Shop/Dealer Price$1833.29 - $2720.28 |
| 2008 BMW M3V8-4.0L | Service typeExhaust Manifold Repair | Estimate$2942.53 | Shop/Dealer Price$3693.13 - $5312.81 |
| 1990 BMW M3L4-2.3L | Service typeExhaust Manifold Repair | Estimate$3504.70 | Shop/Dealer Price$4383.98 - $6886.60 |
| 2013 BMW M3V8-4.0L | Service typeExhaust Manifold Repair | Estimate$2998.53 | Shop/Dealer Price$3744.87 - $5361.37 |
| 1988 BMW M3L4-2.3L | Service typeExhaust Manifold Repair | Estimate$3516.70 | Shop/Dealer Price$4397.40 - $6901.09 |
Depending on your engine and type of vehicle, the exhaust manifold can either be a set of pipes or it can be a cast iron manifold assembly. Essentially the exhaust manifold takes the burned exhaust gases from the engine’s cylinders and ejects the gas through the exhaust system and out through the car's tail pipe. The exhaust gases are the burned fuel/air residue from the combustion process in the cylinders of the engine. Over time, the constant expansion and contraction of the components (caused by constant heating and cooling in the engine), may cause the manifold to crack and leak. These leaks can be hazardous as hot exhaust gases escape and can damage other components in the engine compartment. A leaky exhaust manifold can also impact engine performance.
Sometimes an exhaust manifold starts to leak because a mounting bolt has broken. If this happens, the mechanic will have to remove the broken bolt or stud, which can increase the labor time needed to fix the problem. Your mechanic may charge you an additional fee, depending on the severity of the situation.
The exhaust manifold is transferring burned gasses from the engine. It is located in a high temperature zone, and it will leak eventually. There is no way to prevent it. Your mechanic should use anti-seize compound on the bolts when they are replacing this part. This will help prevent bolts from breaking in the cylinder head.
A leaky exhaust manifold is a health and safety concern. Hot exhaust gases escaping from the engine can be a fire hazard melting nearby plastic components in the engine compartment.
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