These connecting tubes connect the heat exchanger to the control box in which the heat exchanger is mounted, the heat exchanger is controlled from the dashboard by a cable to regulate the amount of hot air.
It is essential for the proper functioning of the heating system that these pipes connect properly without other defects such as rust holes.
Replacement is a necessity for many Volkswagen Buses, due to age and exposure to weather influences, both the left and right tubes are usually rusted.
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