Genuine Mercedes Various models vacuum check valve Pt No: - 123 800 00 78, 1238000078
This part is used in the braking, central locking and ventilation systems on most models between 1970 and 2014.
 
Problems with your vacuum system?
 
Not maintaining vacuum, leaks in the system or cracked check valves? 
 
Perhaps the valves are missing completely?
 
Replace it with a Genuine replacement part.
 
 
Part shown as no 29 & 500 in the diagram attached.
 
 
Will suit the following MB vehicles:-
W107 SL            (1971 to 1989)
W107SLC          (1972 to 1981)
W116 Sedan      (1973 to 1980)
W123 Sedan      (1975 to 1985)
W123 Wagon     (1977 to 1986)
W123 Coupe      (1976 to 1985)
W126 Sedan      (1979 to 1991)
W126 Coupe      (1980 to 1991)
W461 G-Wagon (1991 to 2019)
W463 G-Wagon (1990 to 2018)
Vario - W668      (1996 to 2013) 
W638 Vito          (1996 to 2003)
W638 V Klasse  (1996 to 2003)
W639 Vito          (2003 to 2014)
W639 Viano       (2003 to 2014)
Sprinter 903       (1995 to 2006)
 
 
Original Part No’s:- 
A1238000078 
1238000078
A123 800 00 78
123 800 00 78
123 800 0078
123-800-00-78
Superseded by:- 001 140 66 60 & 002 140 84 60
 
Don’t not pay over $55.00 for the genuine part. Our price only $27.50
NB:- 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 for classic Mercedes Benz vehicles are available
 
McStarparts – “We keep classic Benz’s on the road.”