1302-17 – Flange Yokes – 1351-21 Series – Bolt Circle Dia 3.575″ – Pilot Dia 1.811, M

The 1302-17 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 1302-17 flange yoke is the correct replacement.

1302-17 Flange Yoke — 1351-21 Series Specifications & Fitment

The 1302-17 flange yoke specs: 3.575 bolt circle | 1.811 pilot | 4x0.450 bolt holes | 1.688" 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 1302-17 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: 1351-21 — built for this drivetrain application
• Bolt circle: 3.575 — must match axle/diff flange hole pattern exactly
• Pilot dia: 1.811 — centers yoke on companion flange, no play allowed
• 4 bolt holes at 0.450 — verify hole count and size
• CJ-to-flat: 1.688" — affects driveshaft working angle clearance
• Brand: UDS — direct-fit replacement

Specifications

• SKU: 1302-17
• Brand: UDS
• Series: 1351-21
• Bolt Circle: 3.575
• Pilot Dia: 1.811
• Bolt Holes: 4
• Bolt Hole Dia: 0.450
• CJ to Flat: 1.688"