5-291X UDS 1310 to 2C combo conversion Universal joint

The 5-291x is a COMBO series OSR/WB retention universal joint measuring 1.063"/1.312" dual cap | 3.219"/3.125" dual width. This is a combination u-joint -- it bridges two different series in one cross. The 5-291x is greaseable with zerk fitting. Every 5-291x is verified for cap diameter, bearing width, and snap ring groove dimensions before it ships from Universal Driveshafts.

5-291X -- COMBO Series Cap & Width Specifications

The it specs: 1.063"/1.312" dual cap | 3.219"/3.125" dual width. Cap diameter determines which yoke bore it fits -- the cap must seat fully into the yoke without play. Dual cap diameters (1.063" and 1.312") bridge two different series yokes in a single cross. Bearing width (3.219" and 3.125" across the body) controls the span between yoke ears. A cross that is too wide won't fit; too narrow and the snap rings don't seat in the groove. alternative part #: 2-0291 the part 509 Wings style to OSR style.

Confirm both ends of the driveshaft before installing the this component. Combination u-joints require matching the correct series at each end -- the 1.063" caps go into one yoke, the 1.312" caps go into the other. Getting the orientation wrong means the driveshaft won't balance and the this u-joint will fail early. Measure both yoke bores with calipers before ordering -- don't rely on the vehicle spec alone.

Installation Notes for it

Before installing the this unit, clean the yoke bores of any rust, burrs, or old bearing material. The bearing cups must drop in by hand -- never drive them in with a hammer directly on the cup. Use a proper cross-and-bearing installation tool or a press. Driving a cup in at an angle cocks the needle bearings and destroys the the assembly before it ever sees load.

After installation, verify full rotation without binding. A binding cross indicates a cup is cocked or seated too deep. The this u-joint should articulate freely through the full operating angle of your driveshaft before the vehicle is lowered off the lift.

Key Features

• Series: COMBO series
• Cap dia: 1.063" x 1.312" -- must match yoke bore exactly
• Width: 3.219" x 3.125" -- controls yoke ear span
• Style: OSR/WB retention -- verify yoke groove type before ordering
• Greaseable -- zerk fitting included, service at regular intervals
• This is a combination u-joint -- it bridges two different series in one cross.
• Brand: UDS
• Note: alternative part #: 2-0291 it 509 Wings style to OSR style

Specifications

• SKU: the partU
• Part Number: this component
• Brand: UDS
• Series: COMBO
• Cap Dia 1: 1.063"
• Cap Dia 2: 1.312"
• Width 1: 3.219"
• Width 2: 3.125"
• Snap Ring Style: OSR/WB
• Lube: Yes -- grease fitting
• Notes: alternative part #: 2-0291 this u-joint 509 Wings style to OSR style