Ensuring you are Ready for the Road Ahead™, the Bendix AD-9® Soft Seat Purge Valve Kit removes contaminants in the end cover sump amid the purge cycle of the truck's air dryer system. This heavy duty purge valve kit includes a new standard purge valve assembly, O-rings, screw, washers, and lubricant. FleetPride is your First Click in Heavy Duty®.