When replacing the water pump on a VW EA888 Gen 3 (2.0 TSI), why is the factory procedure to replace the coolant thermostat simultaneously?
-
A
The thermostat is only accessible with the water pump removed
-
B
VW requires it as a precaution against coolant contamination
-
C
Both components share a common housing and are replaced as an assembly
-
D
The thermostat seal degrades from exposure during pump replacement