3502-104A – Flange Yokes – 1350 Series – Bolt Circle Dia 3.470″ – Pilot Dia 4.093, OD

The 3502-104A flange yoke mounts to the companion flange or axle housing and carries the driveshaft end u-joint. It's not a universal part — the bolt circle, pilot diameter, and series are all specific. Vibration that tracks with vehicle speed and stays consistent under load often starts right here, at a worn or mis-seated flange yoke. The 3502-104A flange yoke is the correct replacement.

3502-104A Flange Yoke — 1350 Series Specifications & Fitment

The 1350 series covers 3/4-ton trucks — F-250, Ram 2500, Dana 44/60 axles, performance 4x4. The 3502-104A flange yoke specs: 3.470 bolt circle | 4.093 pilot | 8x0.425 bolt holes | 3.440" CJ-to-flat. Pilot diameter is what centers the yoke on the companion flange — that dimension must match exactly or the driveshaft will run off-center at speed. Bolt circle determines your hole pattern match.

Before ordering the 3502-104A flange yoke, measure your diff flange bolt circle and pilot diameter directly. Don't rely on series designation alone — after an axle swap, the flange dimensions may differ from the original factory spec. Brand: UDS. Verify, then order.

Key Features

• Series: 1350 — built for 3/4-ton trucks — F-250, Ram 2500, Dana 44/60 axles, performance 4x4
• Bolt circle: 3.470 — must match axle/diff flange hole pattern exactly
• Pilot dia: 4.093 — centers yoke on companion flange, no play allowed
• 8 bolt holes at 0.425 — verify hole count and size
• CJ-to-flat: 3.440" — affects driveshaft working angle clearance
• Brand: UDS — direct-fit replacement

Specifications

• SKU: 3502-104A
• Brand: UDS
• Series: 1350
• Bolt Circle: 3.470
• Pilot Dia: 4.093
• Bolt Holes: 8
• Bolt Hole Dia: 0.425
• CJ to Flat: 3.440"