The 90-4-591-1X is a robust end yoke from the SPL90 series, designed for high-demand applications. This yoke features a spline count of 32 and a major spline diameter of 2.114 inches. The hub diameter is 3.000 inches, providing a solid connection point. It has a through hole measurement of 2.250 inches and a centerline to end measurement of 4.375 inches, ensuring compatibility with various driveline setups. Classified as heavy-duty (HD) and styled as BS, this yoke is built to withstand demanding conditions and provide reliable performance.