Update your semi with a smooth transfer of power between hydraulic components, with the Weatherhead 3.22" Male Pipe Rigid Steel Hydraulic Coupling that ensures you're Ready for the Road Ahead. This replacement coupling offers a quick and easy connection of hydraulic fuel lines from components such as pumps and hoses. Manufactured with a solid metal body to endure demanding conditions and extreme pressures. FleetPride is your First Click in Heavy Duty.