WUR Part number
 

Where is the part number stamped on the WUR? Is it the same number that I find in the PET?

I can't look at mine now in that I am a couple hundred miles away from my car. But I think you should be able to figure it out here.

Steve, The part number stamped into the WUR is the Bosch Number. It is stamped into the top. Can be hard to read.

The Porsche Number is totally different.

If it has been rebuilt, the rebuilders commonly grind off the last digits 'cause they can pretty well make them whatever they want.