Get your semi Ready for the Road Ahead with enhanced power for auxiliary applications, with the Chelsea 489 Series 8-Bolt 25/34 Standard Mount Power Take-Off. Thanks to its advanced design, this replacement PTO is able to generate power for auxiliary equipment by connecting to the transmission, and converting its rotational energy into power for various devices. Engineered with precision components to provide long-term reliability for semis, tractors, and hydraulic engagements. FleetPride is your First Click in Heavy Duty .