Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Cylinder head
The cylinder head of the motor S63 TOP is a new innovation with integrated air ducts for the crankcase ventilation. The oil circuit has also been revised and adjusted to the increased power. The third generation of the Valvetronic is used with the engine S63 TOP as with the engine N55.
A new three-layer spring steel seal is used as a cylinder head gasket. The contact surfaces to the cylinder head and engine block are equipped with an anti-stick coating.
The graphic below shows components that are installed in the cylinder head.
| Index | Explanation |
|---|---|
| 1 | Flange for high pressure pump |
| 2 | Gate |
| 3 | Eccentric shaft |
| 4 | Spring |
| 5 | Intermediate lever |
| 6 | Valvetronic servomotor |
| 7 | VANOS solenoid valve for intake and exhaust |
| 8 | VANOS, intake side |
| 9 | VANOS, exhaust side |
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.