VIPER AF3250 Coolant Flush SystemThe VIPER AF3250 brings the benefit of multi functional operation in an easy to use design. The AF3250 will drain, flush, back flush and fill, plus it checks the system two ways to ensure there are no leaks and to verify proper system pressure. Multiple functions in one unit. Performs diagnostic pressure checks for leaks. Offers multiple connection options and includes an assortment of tees and adapters. A handy hose attachment enables quick filling