3326-405A – Weld Yokes – 1330 Series – Butt Dia 3.844″ – Tube Dia Wall 4.000X0.083

The 3326-405A weld yoke is a aluminum T6061 weld-on yoke for 1330 series driveshaft applications. It attaches permanently to the tube via weld and carries the u-joint cross at the outboard end of the shaft. Center-to-weld dimension and butt diameter are the two numbers that matter most here.

3326-405A Weld Yoke — Tube Fit & Aluminum Specs

The 1330 series covers light-to-medium duty trucks and GM half-ton platforms. The 3326-405A weld yoke specs: fits 4.000X0.083 tube | 3.844" butt dia | 2.375" center-to-weld. Aluminum T6061 — roughly 60% lighter than steel equivalent, corrosion resistant, correct for high-RPM builds where rotating mass matters. Center-to-weld dimension is critical for total shaft length calculations — it's the distance consumed by this yoke on that end of the tube.

Measure your tube OD before cutting and welding the 3326-405A weld yoke. Tack it in place first, check runout is within 0.005" before committing to full weld. A slight off-angle tack that gets welded solid will show up as vibration at 50+ mph that no balancer can fully correct.

Key Features

• Series: 1330 — light-to-medium duty trucks and GM half-ton platforms
• Tube fit: 4.000X0.083 — butt diameter is machined specifically for this OD
• Butt dia: 3.844" — must match tube OD precisely for a centered weld joint
• Center-to-weld: 2.375" — factors into total shaft length calculation
• Aluminum T6061 — lightweight, corrosion resistant, reduces rotating inertia
• Brand: UDS

Specifications

• SKU: 3326-405A
• Brand: UDS
• Series: 1330
• Material: Aluminum
• Tube Fit: 4.000X0.083
• Butt Dia: 3.844"
• Center to Weld: 2.375"