3103-321 – Transmission Yokes – 1310 Series – 31/32 X 1.378 Splines – 1.700″ Hub Dia

The 3103-321 transmission yoke is the connection between the gearbox tailshaft and the front of the driveshaft. It splines onto the transmission output shaft and carries the front u-joint of the driveshaft. For 1310 series applications, the spline count and hub diameter are the two specs that determine whether this part fits your tailshaft correctly.

3103-321 Transmission Yoke — 1310 Series Specs & Tailshaft Fit

The 1310 series covers light-duty trucks — F-150, Silverado 1500, Jeep Wrangler, Ram 1500. The 3103-321 transmission yoke specs: 31/32 X 1.378 spline | 1.700" hub | 6.350" CJ-to-end. Hub diameter determines engagement depth on the tailshaft — if the hub is too short, the splines don't fully engage. CJ-to-end affects driveshaft working length.

After a transmission rebuild or swap, confirm the tailshaft spline count hasn't changed before installing the 3103-321 transmission yoke. Not all 1310 series transmissions use the same output spline across all years and configurations. Count the splines on the actual shaft.

Key Features

• Series: 1310 — light-duty trucks — F-150, Silverado 1500, Jeep Wrangler, Ram 1500
• Spline: 31/32 X 1.378 — must match transmission tailshaft
• Hub dia: 1.700" — determines spline engagement depth
• CJ-to-end: 6.350" — affects driveshaft working length
• Brand: UDS

Specifications

• SKU: 3103-321
• Brand: UDS
• Series: 1310
• Spline: 31/32 X 1.378
• Hub Dia: 1.700"
• CJ to End: 6.350"