Changing the spark plugs is it required to change the Ignition Coil?

It is not strictly necessary to replace the ignition coils unless they are showing signs of wear or failure. However, some people choose to replace the ignition coils as a preventative measure. We like FPCeuro.com to get the parts from.

Spark Plugs:
OEM Part Number: A 004 159 71 03 (Mercedes-Benz part number)
Alternate Part Numbers (from other manufacturers):
Bosch: 0242240646
NGK: SILZKFR8D7S

Ignition Coils:
OEM Part Number: A 276 906 10 00 (Mercedes-Benz part number)
Alternate Part Numbers (from other manufacturers):
Bosch: 0221504856

Spark plug to cylinder head Nm 23

Here is how the job is done in the diagrams below: Check out the images (below). Let us know if you need anything else.