PTO Shearbolt Clutch 1-3/8"-6 Spline Heavy-Duty - Sparex Part S.6158The Sparex S. 6158 PTO Shearbolt Clutch provides dependable driveline protection by preventing overload damage in tractor PTO systems. Engineered for reliable torque limitation, it ensures safe operation of power driven implements such as mowers, balers, and augers under varying load conditions. This heavy duty shearbolt clutch features a universal joint size of 30. 2 x 92mm, a 1 3 8" 6 spline bore, and a preset torque setting of 2400 Nm. Built to fit