
To replace the sampling device with the Mercedes S-Class (W221), perform such actions:
- We're taking off the air filter.

- The tube (1) shall be removed from the mounting bracket (2).
- Disconnect the hose (4) and screw the bolts (2a).
- Remove the sampling device from the head of the cylinder head (3).

- Install the inverse of the inverse. The bolts need to be tightened at 12 Nm