Originally Posted by deadbodyman
We have a few semi truck bone yards around here whats inside the semi air dryer????
Here's the link to the Midland air dryer commonly used . I just found one on ebay for $259.99 . Like I said, they are expensive . But I seem to remember the service kit being about $35.oo. BTW , the heater on them is only to keep the discharge port from icing . Not a problem in a garage.