Vacuum locking/Unlocking Pump (found in trunk on left side under the hydraulic pump in Convertible Mercedes-Benz Roadsters)
Fitment - Mercedes-Benz 2003-2012 SL500, SL600, SL550, SL55, SL63, SL65 AMG Models
I have tested the pump and it does run, I have not tested if it pumps to 3 bars or if the board works for all of the lines.
The most common issue with the vacuum pump is the plastic rotor breaking which can be easily replaced.
Detailed Instructional Video found here- https://www.youtube.com/watch?v=EwlFbqw0ul4
Free shipping and 30 day returns.