Can someone advise me on the least expensive way to repair a leaky rear heater on an 84 Vanagon?  I have pulled the heater out.  Seems like a lot of plastic is used to seal things up.  I imagine that the heater sells as a unit, motor, core and all.  I also have a leak in the valve that is used to cut off the water to the heater.

Thanks,
George
Columbus, GA

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