Logic of naming actuators in VW-group is simple it contains "N" + actuator number. The actuator number is unique. Here you can find fitting location, connectors and some basic information about actuators.

To our mind, actuators information is reference, so there is only simple search by number.


Audi R8 42 (2007- )
Audi A8 4D (1994-2002)
Audi A8 4E (2002 -)
Audi A6 4F (2005- )
Audi Q7 4L (2007- )
Audi A4 8E (2001-2008)

Function of camshaft adjustment


The adjustment of the inlet camshafts is load- and speed-sensitive. The exhaust camshafts are not adjusted.


By means of the electric camshaft adjustment solenoid valve oil pressure is switched to the camshaft timing control (mechanical adjusters).


The camshaft adjusters then advance the inlet camshafts of both cylinder banks, i.e. the inlet valves open earlier.

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November 30, 2012
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