Part No. S3-3-7021X Slip Yoke, 1480 Series, 1.587" Splines Dia, Center U Joint To End 6.810

Getting the right slip yoke requires verifying both spline profile and U-joint series before installation. The S3-3-7021X is a 1480 series slip yoke with 23/24 splines and 1.587" bore diameter, designed for Spicer and compatible with standard 1480 series U-joint crosses and yokes.

Fitment Verification Guide

Before ordering a slip yoke, gather three measurements from the existing unit or your transmission shaft: spline tooth count, pitch diameter, and the center-of-U-joint to yoke-end distance. For the S3-3-7021X, those values are 23/24 teeth, 1.587" diameter, and 6.810" center-to-end. A mismatch on any of these dimensions means this is not the correct part for your application.

Specifications Table

Material and Construction

Slip yokes must handle both torsional and bending loads at the U-joint cross. The S3-3-7021X is forged from medium-carbon alloy steel and heat-treated to balance hardness with toughness. Yoke ears are machined to close tolerance for the 1480 series bearing cup diameter, ensuring the U-joint cross seats without rocking in the bores.

Installation Notes

• Clean and inspect the transmission output shaft splines for deformation before installation
• Slide the S3-3-7021X onto the output shaft and confirm it moves freely with only slight resistance
• Insert the U-joint cross into the yoke ears; verify bearing cups seat flush
• Install snap rings; confirm each ring snaps into its groove completely
• Check phasing of front and rear U-joints -- they must be in phase for smooth operation

Parts and Support

Universal Driveshafts carries 1480 series slip yokes, companion yokes, crosses, and complete driveshaft assemblies. The S3-3-7021X is in stock for fast delivery. Use our live chat or call us to confirm fitment with your vehicle data.

Not sure which slip yoke you need? Our transmission slip yoke guide covers spline counts, styles, and how to measure.