There were at least 5 other numbers BEFORE the 140-830-20-85 came out! 140-830-02-85 was the first. ANY of the numbers will work in a 1992-95 car. The "latest" replacement number is still the 140-830-20-85 for 1992-95 cars.

The 140-830-15-85 was used up to chassis 113619, then the 140-830-20-85 was installed from the factory.

IF you unplug the heater valve do you get heat?? IF not then the valve is at fault OR the core is is plugged.

__________________
MERCEDES Benz Master Guild Technician (6 TIMES)
ASE Master Technician
Mercedes Benz Star Technician (2 times)
44 years foreign automotive repair
27 Years M.B. Shop foreman (dealer)
MB technical information Specialist (15 years)
190E 2.3 16V ITS SCCA race car (sold)
1986 190E 2.3 16V 2.5 (sold)
Retired Moderator