Transmission Yoke 3-3-3891X Fits 1410 Series – 31/32 Splines x 1.378 Spline Dia

3-3-3891XU 1410 Series Transmission Yoke 31/32 Splines x 1.378 Nickel Plated

The 3-3-3891XU is a 1410 series transmission yoke with 31/32 splines at 1.378" diameter. The hub diameter is 1.886", the CL-to-end dimension is 7.750", and this yoke carries a nickel-plated finish. The counterbore diameter is listed as 0 (no counterbore).

Specifications

• Part Number: 3-3-3891XU
• Series: 1410
• Splines Count: 31/32
• Splines Diameter: 1.378"
• Hub Diameter: 1.886"
• CL to End: 7.750"
• Counterbore Diameter: None
• Finish: Nickel Plated

When fitting the 3-3-3891XU, verify the transmission output shaft carries the correct 31/32-count spline profile at 1.378" diameter. The 31/32 designation indicates this yoke spans two interchangeable spline count variants; confirm the shaft's exact count. No counterbore is present on this yoke, meaning there is no pilot bore relief at the shaft end — ensure the tail shaft snout does not require a counterbore clearance for proper seating.

The 1410 series provides higher torque capacity than the 1350 and is common in heavy-duty truck and performance driveline builds. The 7.750" CL-to-end dimension sets the working geometry at the transmission end of the driveshaft. The nickel-plated finish on the 3-3-3891XU provides corrosion resistance in underbody environments. Confirm the 1410 series matches the U-joints and slip yoke specified for the driveshaft before ordering.