What It Is
A camshaft position sensor, also known as the hall sensor, for the Mk4 BEW engine.
What This Sensor Does
It tracks camshaft rotation and relays that data to the ECU, which uses it to control engine performance and timing.
Fitment
2004-2006 Mk4 Golf, Jetta Wagon, and New Beetle TDI, and 2004-2005.5 Mk4 Jetta TDI, all with the BEW engine code.
Common Questions
What does this sensor actually control?
It tracks camshaft position and rotation, feeding that data to the ECU, which uses it to properly manage engine timing and performance.
Does this fit the ALH engine?
No, this sensor is specific to the BEW engine. ALH-engine cars use a different camshaft position sensor.
Is this also called the hall sensor?
Yes, that's another name commonly used for this same part.