Is your Brake Vacuum Pump acting up?
Or perhaps it has given up the ghost completely.
Time to replace it with this brand new genuine Mercedes Benz Vacuum Pump. 
 
This module suits vehicles fitted with the following OM642 turbo diesel engine 
OM642.820
OM642.826
OM642.850
 
 
May including the following MB Cars:-
W164 4WD ML        (2006 to 2012)
X164 4WD GL         (2007 to 2012)
W166 GL/GLS         (2012 to 2019)
W203 Sedan           (2001 to 2007)
W203 Wagon          (2001 to 2007)
W204 Sedan           (2007 to 2013)
W204 Wagon          (2007 to 2013)
W204 Coupe           (2012 to 2015)
X204 GLK               (2009 to 2015)
W211 Sedan           (2002 to 2009)
W211 Wagon          (2002 to 2009)
W212 E Class         (2009 to 2016)
W218 CLS Sedan   (2010 to 2018)
W219 CLS Sedan   (2004 to 2010)
W221 S Class         (2006 to 2013)
W251 R Class         (2006 to 2013)
W461 G-Wagon      (1991 to date)
W463 G-Wagon      (1990 to date)
W639 Vito               (2003 to 2014)
W639 Viano            (2003 to 2014)
W906 Sprinter         (2006 to 2018) 
Chrysler 300C         (2006 to 2011)
Jeep Grand Cherokee WK/WH     (2005 - 2010)
Jeep Commander XK/XH (2006 - 2010)
This part is shown as no 5 in the diagram above
 
Original Part No:- 
A6422300065
6422300065
A642 230 00 65
642 230 00 65
642 230 0065
642-230-00-65
NSN 123756579
 
Don’t not pay over $1,300 from a dealer. Our price only $795.00
NB: - This is not a reconditioned unit. This item is advertised on other sites and may be sold without notice.
 
Please check you have the correct part number for your vehicle.
 
Most parts available for all W460, W461 & W463 Mercedes models.
 
McStarparts – “Keeping classic Benz’s on the road.”