Get your semi Ready for the Road Ahead with enhanced power for auxiliary applications, with the Chelsea 340 Series 6-Bolt 21/14 Standard Mount Power Take-Off. With an advanced design, this replacement PTO works to generate power for auxiliary equipment by connecting to the transmission, and converting the rotational energy into power for various devices. Built with precision components to provide long-term reliability for semis, tractors, and hydraulic engagements. FleetPride is your First Click in Heavy Duty .