Asked by Jul 25, 2017 at 04:53 AM about the 1999 Audi A4

Question type: Maintenance & Repair

hi, i would like to know what is this part in the image.
it looks like a sensor of some kind, behind the engine of my Audi A4 B5 1.9TDi.
Tried putting this part back in place but it is not staying.
Closely to it there is two more of the same thing, but they are okay in positions.

3 Answers


get a number off it and google it

Tried getting a number, but seems to have been weathered, worn off...

Got it, it's the Auxiliary Water Coolant Glow Plug.

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