●2-3-8251X slip yoke 1310 series compatible with 5-153X 5-1310X 5-1310-1X U joint ●Slip yoke material is steel, SR yoke style, 27 Splines based on 28, Spline O.D (STD) is 1.22" ●Outside Yoke Dimension is 3.466", Bearing Cap Diameter is 1.062", to end of spline 6.5" ●Applicable to Ford 1310 Series Drive Lines used on C-4 T-5 AOD Top Loader and Tremec 3550 Transmissions With 1310 Series Drivelines Starting in 1965 and through 1995. ●Package included: 1X Transmission Slip Yoke, Professional installation is recommended, Installation instruction is NOT included, Please check the Part Number before purchase.