2-2-1879 – Flange Yokes – 1330 Series – Bolt Circle Dia 3.937″ – Pilot Dia 2.162, F

The 2-2-1879 flange yoke is the direct bolt-on connection between your 1330 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 2-2-1879 flange yoke is machined to one specific set of dimensions, and those dimensions have to match your axle flange exactly.

2-2-1879 Flange Yoke — 1330 Series Specifications & Fitment

The 1330 series covers light-to-medium duty trucks and GM half-ton platforms. The 2-2-1879 flange yoke specs: 3.937 bolt circle | 2.162 pilot | 4x0.489 bolt holes | 1.930" 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 2-2-1879 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: 1330 — built for light-to-medium duty trucks and GM half-ton platforms
• Bolt circle: 3.937 — must match axle/diff flange hole pattern exactly
• Pilot dia: 2.162 — centers yoke on companion flange, no play allowed
• 4 bolt holes at 0.489 — verify hole count and size
• CJ-to-flat: 1.930" — affects driveshaft working angle clearance
• Brand: UDS — direct-fit replacement

Specifications

• SKU: 2-2-1879
• Brand: UDS
• Series: 1330
• Bolt Circle: 3.937
• Pilot Dia: 2.162
• Bolt Holes: 4
• Bolt Hole Dia: 0.489
• CJ to Flat: 1.930"