3503-311 – Transmission Yokes – 1350 Series – 30/31 X 1.391 Splines – 1.685″ Hub Dia

The 3503-311 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 1350 series applications, the spline count and hub diameter are the two specs that determine whether this part fits your tailshaft correctly.

3503-311 Transmission Yoke — 1350 Series Specs & Tailshaft Fit

The 1350 series covers 3/4-ton trucks — F-250, Ram 2500, Dana 44/60 axles, performance 4x4. The 3503-311 transmission yoke specs: 30/31 X 1.391 spline | 1.685" hub | 8.440" CJ-to-end. Compatible with: Full Spline. 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 3503-311 transmission yoke. Not all 1350 series transmissions use the same output spline across all years and configurations. Count the splines on the actual shaft.

Key Features

• Series: 1350 — 3/4-ton trucks — F-250, Ram 2500, Dana 44/60 axles, performance 4x4
• Spline: 30/31 X 1.391 — must match transmission tailshaft
• Hub dia: 1.685" — determines spline engagement depth
• CJ-to-end: 8.440" — affects driveshaft working length
• Compatible with: Full Spline
• Brand: UDS

Specifications

• SKU: 3503-311
• Brand: UDS
• Series: 1350
• Spline: 30/31 X 1.391
• Hub Dia: 1.685"
• CJ to End: 8.440"
• Notes: Full Spline