3102-37 – Flange Yokes – 1310 Series – Bolt Circle Dia 3.750″ – Bolt Hole Dia 0.481

The 3102-37 flange yoke is the direct bolt-on connection between your 1310 series driveshaft and the differential or axle housing flange. Bolt circle and pilot diameter are the two specs that determine whether this part fits — everything else is secondary. The 3102-37 flange yoke is machined to one specific set of dimensions, and those dimensions have to match your axle flange exactly.

3102-37 Flange Yoke — 1310 Series Specifications & Fitment

The 1310 series covers light-duty trucks — F-150, Silverado 1500, Jeep Wrangler, Ram 1500. The 3102-37 flange yoke specs: 3.750 bolt circle | 2.559 pilot | 4x0.481 bolt holes | 1.750" 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 3102-37 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: 3.750 — must match axle/diff flange hole pattern exactly
• Pilot dia: 2.559 — centers yoke on companion flange, no play allowed
• 4 bolt holes at 0.481 — verify hole count and size
• CJ-to-flat: 1.750" — affects driveshaft working angle clearance
• Brand: UDS — direct-fit replacement

Specifications

• SKU: 3102-37
• Brand: UDS
• Series: 1310
• Bolt Circle: 3.750
• Pilot Dia: 2.559
• Bolt Holes: 4
• Bolt Hole Dia: 0.481
• CJ to Flat: 1.750"