3102-91 – Flange Yokes – 1310 Series – Bolt Circle Dia 3.585″ – Pilot Dia 4.094, OD

When a 1310 series flange yoke fails, the symptoms show up fast: driveline clunk under acceleration, vibration that doesn't go away with speed changes, or visible play at the diff flange. The 3102-91 flange yoke is the spec-correct replacement — correct bolt circle, correct pilot, correct series. Dimension confirmation before ordering is still the right call.

3102-91 Flange Yoke — 1310 Series Specifications & Fitment

The 1310 series covers light-duty trucks — F-150, Silverado 1500, Jeep Wrangler, Ram 1500. The 3102-91 flange yoke specs: 3.585 bolt circle | 4.094 pilot | 6x0.328 bolt holes | 2.672" 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 3102-91 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: 1310 — built for light-duty trucks — F-150, Silverado 1500, Jeep Wrangler, Ram 1500
• Bolt circle: 3.585 — must match axle/diff flange hole pattern exactly
• Pilot dia: 4.094 — centers yoke on companion flange, no play allowed
• 6 bolt holes at 0.328 — verify hole count and size
• CJ-to-flat: 2.672" — affects driveshaft working angle clearance
• Brand: UDS — direct-fit replacement

Specifications

• SKU: 3102-91
• Brand: UDS
• Series: 1310
• Bolt Circle: 3.585
• Pilot Dia: 4.094
• Bolt Holes: 6
• Bolt Hole Dia: 0.328
• CJ to Flat: 2.672"