Update your semi with an efficient transfer of torque in the drivetrain, with the Spicer 1810 Series 54-Spline Straight Round Hole Steel Differential End Yoke that ensures you're Ready for the Road Aheadâ„¢. With a Y-shaped design, this replacement device acts as a connection point between drivetrain components, while accommodating for angular misalignment. Manufactured with high-quality materials to endure the rigors of everyday wear and tear.