Equip your semi to be Ready for the Road Ahead , with the Neapco 3" 16-Tooth Steel Driveshaft Slip Yoke, a crucial element that provides reliable driveshaft power when crossing rough terrain. Due to its Y-shaped design, this replacement slip yoke allows the driveshaft to move or flex without losing power or experiencing mechanical failure. Constructed with hardened steel to decrease wear and provide long-term dependability. FleetPride is your First Click in Heavy Duty .