Ensure your semi is Ready for the Road Aheadâ„¢ with reliable driveshaft power when crossing rough terrain, with the Spicer 3" 16-Tooth Steel Driveshaft Slip Yoke. 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.