Update your semi with a smooth transfer of power between hydraulic components, with the Gates Male Swivel Brass Hydraulic Coupling that ensures you're Ready for the Road Ahead. Due to its streamlined design, this replacement coupling is able to provide a quick and easy connection between hydraulic fuel lines such as hoses and pumps. Constructed with a rugged metal body to tolerate demanding conditions and extreme pressures. FleetPride is your First Click in Heavy Duty.