1702-31 – Flange Yokes – 1751 Series – Bolt Circle Dia 3.120″ – Pilot Dia 1.772, M

The 1702-31 flange yoke is the direct bolt-on connection between your 1751 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 1702-31 flange yoke is machined to one specific set of dimensions, and those dimensions have to match your axle flange exactly.

1702-31 Flange Yoke — 1751 Series Specifications & Fitment

The 1702-31 flange yoke specs: 3.120 bolt circle | 1.772 pilot | 4x0.325 bolt holes | 1.562" 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 1702-31 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: 1751 — built for this drivetrain application
• Bolt circle: 3.120 — must match axle/diff flange hole pattern exactly
• Pilot dia: 1.772 — centers yoke on companion flange, no play allowed
• 4 bolt holes at 0.325 — verify hole count and size
• CJ-to-flat: 1.562" — affects driveshaft working angle clearance
• Brand: UDS — direct-fit replacement

Specifications

• SKU: 1702-31
• Brand: UDS
• Series: 1751
• Bolt Circle: 3.120
• Pilot Dia: 1.772
• Bolt Holes: 4
• Bolt Hole Dia: 0.325
• CJ to Flat: 1.562"