3502-1579 Flange Yoke 1350 Series Pilot 2″ Bolt Circle Dia: 4.250 | Ford 3-2-1579

The 3-2-1579 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 3-2-1579 flange yoke is the correct replacement.

3-2-1579 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 3-2-1579 flange yoke specs: 4.250 bolt circle | 2.000 pilot | 4x0.500 bolt holes | 1.625" 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 3-2-1579 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: 4.250 — must match axle/diff flange hole pattern exactly
• Pilot dia: 2.000 — centers yoke on companion flange, no play allowed
• 4 bolt holes at 0.500 — verify hole count and size
• CJ-to-flat: 1.625" — affects driveshaft working angle clearance
• Brand: UDS — direct-fit replacement

Specifications

• SKU: 3-2-1579
• Brand: UDS
• Series: 1350
• Bolt Circle: 4.250
• Pilot Dia: 2.000
• Bolt Holes: 4
• Bolt Hole Dia: 0.500
• CJ to Flat: 1.625"