James Post

Hey guys, new member here and new owner of a 2003 s600.


Could someone please help me identify what is the black circular compartment just above the alternator to the left by the serpentine belt.


I believe this box is also under the low pressure circuit for the intercooler feed for the pump.


Thanks for any help.

Welwynnick

I think that's the air injection pump.

ItalianJoe1

Yep, it's the SAI pump

James Post

Ok thanks for responding, I was wondering what that was for the longest time.