Equip your semi to be Ready for the Road Ahead , with the Haldex 7-Way Heavy Duty Die-Cast Receptacle, a key component that offers enhanced electric power. Due to its machined brass terminal pins, this replacement receptacle is the ideal option for charging electrical components. Constructed with a fully-interchangeable design that pairs with other SAE-type 7 connectors. FleetPride is your First Click in Heavy Duty .