3303-321 – Transmission Yokes – 1330 Series – 31/32 X 1.378 Splines – 1.886″ Hub Dia

The 3303-321 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 1330 series applications, the spline count and hub diameter are the two specs that determine whether this part fits your tailshaft correctly.

3303-321 Transmission Yoke — 1330 Series Specs & Tailshaft Fit

The 1330 series covers light-to-medium duty trucks and GM half-ton platforms. The 3303-321 transmission yoke specs: 31/32 X 1.378 spline | 1.886" hub | 7.250" 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 3303-321 transmission yoke. Not all 1330 series transmissions use the same output spline across all years and configurations. Count the splines on the actual shaft.

Key Features

• Series: 1330 — light-to-medium duty trucks and GM half-ton platforms
• Spline: 31/32 X 1.378 — must match transmission tailshaft
• Hub dia: 1.886" — determines spline engagement depth
• CJ-to-end: 7.250" — affects driveshaft working length
• Brand: UDS

Specifications

• SKU: 3303-321
• Brand: UDS
• Series: 1330
• Spline: 31/32 X 1.378
• Hub Dia: 1.886"
• CJ to End: 7.250"