Ensure your semi truck is Ready for the Road Ahead™ with the exact amount of tire pressure needed, with the Hendrickson Tiremaax® Delphi Connector Pro Controller Assembly. Thanks to its portable design, this controller allows operators to maintain the ideal tire pressure for vehicles journeying through a number of conditions. Constructed with a pressure-resilient design, and paired with an air pressure gauge and safety release valve. FleetPride is your First Click in Heavy Duty®.