A cost-effective solution that addresses a major weak area of the N63 and S63 engine, part of leak diagnostic guide SIB 11 09 16

Position 1 in the diagram

Acoustic insulating foam that covers the rear ignition coils of the engine, between the cylinder head and firewall

Position 8 in the diagram

Positon 13 in the diagram - Diagram may not match your specific vehicle

Position 10 in the diagram

A common source of leaks, part of leak diagnostic guide SIB 11 09 16

Position 7 in the diagram