Equip your semi truck to be Ready for the Road Ahead , with the Parker-Hannifin 3/8" ID Female JIC 37° Swivel Steel Hydraulic Coupling, a key piece to offer a smooth transfer of power between hydraulic components. Thanks to its streamlined design, this replacement coupling provides a quick and easy connection between hydraulic fuel lines such as hoses and pumps. Crafted with a rugged metal body to withstand demanding conditions and extreme pressures. FleetPride is your First Click in Heavy Duty .