4102-370 – Flange Yokes – 1410 Series – Bolt Circle Dia 4.750″ – Pilot Dia 3.750, M

The 4102-370 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 4102-370 flange yoke is the correct replacement.

4102-370 Flange Yoke — 1410 Series Specifications & Fitment

The 1410 series covers HD trucks — F-250/350/450, Ram 2500/3500, Dana 60/70 axles. The 4102-370 flange yoke specs: 4.750 bolt circle | 3.750 pilot | 4x0.500 bolt holes | 2.095" 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 4102-370 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: 1410 — built for HD trucks — F-250/350/450, Ram 2500/3500, Dana 60/70 axles
• Bolt circle: 4.750 — must match axle/diff flange hole pattern exactly
• Pilot dia: 3.750 — centers yoke on companion flange, no play allowed
• 4 bolt holes at 0.500 — verify hole count and size
• CJ-to-flat: 2.095" — affects driveshaft working angle clearance
• Brand: UDS — direct-fit replacement

Specifications

• SKU: 4102-370
• Brand: UDS
• Series: 1410
• Bolt Circle: 4.750
• Pilot Dia: 3.750
• Bolt Holes: 4
• Bolt Hole Dia: 0.500
• CJ to Flat: 2.095"