Complete partial hydraulic steering system for Jeep TJ, LJ (03-06) halves the force acting on the steering gear. designed for wheels up to 42" The system consists of: steering gear, hydraulic cylinder, joint eyes, axle holder, all required hoses including fittings, PSC high-performance pump, belt pulley, expansion tank with inlet filter and expansion tank holder. We recommend using special power steering oil for the PSC high-performance pumps: Swepco 715 or KSE Elixer