Heating tube set Split Bus -07/67Heating tube set Usually these heating tubes suffer heavily from corrosion or they felt simply from under the vehicle after more than 45 years of loyal service. You don't have to look far for the cause. Due to the assembly underneath the car, these tubes are in touch with humid conditions and in certain regions road salt can harm them. A good functioning heating is nevertheless indispensable in many regions if you wish to enjoy your classic car for a