P8-2-109 – Flange Yokes – 1880 Series – Bolt Circle Dia 8.250″ – Bolt Hole Dia 0.625

When a 1880 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 P8-2-109 flange yoke is the spec-correct replacement — correct bolt circle, correct pilot, correct series. Dimension confirmation before ordering is still the right call.

P8-2-109 Flange Yoke — 1880 Series Specifications & Fitment

The 1880 series covers Class 5-7 heavy-duty commercial trucks. The P8-2-109 flange yoke specs: 8.250 bolt circle | 7.000 pilot | 8x0.625 bolt holes | 3.500" 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 P8-2-109 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: 1880 — built for Class 5-7 heavy-duty commercial trucks
• Bolt circle: 8.250 — must match axle/diff flange hole pattern exactly
• Pilot dia: 7.000 — centers yoke on companion flange, no play allowed
• 8 bolt holes at 0.625 — verify hole count and size
• CJ-to-flat: 3.500" — affects driveshaft working angle clearance
• Brand: UDS — direct-fit replacement

Specifications

• SKU: P8-2-109
• Brand: UDS
• Series: 1880
• Bolt Circle: 8.250
• Pilot Dia: 7.000
• Bolt Holes: 8
• Bolt Hole Dia: 0.625
• CJ to Flat: 3.500"