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 5-291x 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 5-291x 509 Wings style to OSR style.

Confirm both ends of the driveshaft before installing the 5-291x. 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 5-291x will fail early. Measure both yoke bores with calipers before ordering -- don't rely on the vehicle spec alone.

Installation Notes for 5-291x

Before installing the 5-291x, 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 5-291x 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 5-291x 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 5-291x 509 Wings style to OSR style

Specifications

• SKU: 5-291XU
• Part Number: 5-291X
• 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 5-291x 509 Wings style to OSR style