Spicer 6-4-6391-1X End Yoke is a differential end yoke assembly with a splined bore, designed for high-angle, 1710-series driveshaft applications. The End Yoke Assembly includes the splined-bore component 6-4-6371-1 and a slinger/plug (P/N 231359), aligning with Spicer’s end-yoke catalog. This HR-style (high-angle) yoke lists dimensions: Major Diameter 2.024 in; R 3.000 in; Q 2.312 in; S 6.250 in; C'Bore Depth 0.090 in. The 6-4-6391-1X is the current replacement option for the older 6-4-6391X, and is intended for spline-bore end connections on 1710-series driveline assemblies, where it would be paired with compatible U-joint hardware to complete the driveshaft end.
