[s-cars] P/N 034 253 033C -What type of EM ?

[Postupack, Jeff]

HI:
Oh master's of the ETKA, I've searched and cannot find this.
 
I have an EM, with Audi 4 rings and this part number in the casting.. 
034 253 033C 
 
What type is it? 
 

Jeff