N.º de parte 4-3-1431KX Yugo deslizante serie 1550, estrías: 1.750x16, Eje a extremo: 10.062

4-3-1431KX -- UDS 1550 Series Slip Yoke, 1.750"x16 Spline, 10.062" Centerline-to-End

The 1550 series occupies a specific position in the driveshaft torque hierarchy: above 1480 (1.375" caps), below 1610 (1.875" caps). It's not a common series in light trucks -- you'll find 1550 primarily in medium-duty commercial trucks, heavy vans, large SUVs like Suburban and Excursion with high-GVWR axle packages, and some Class 3-4 chassis cab applications. If you're ordering a 4-3-1431KX, you already know you need 1550 -- but double-check the stop shaft: the 1.750-inch diameter 16-spline profile is specific to this series and will not engage a 1480 stop shaft (1.500" / different spline count) or a 1610 stop shaft.

The 10.062-inch centerline-to-end is a long slip yoke, giving substantial telescoping range for applications with significant suspension travel or driveshaft length variation. Lube fitting 500168-2 installs in the yoke to grease the spline bore during service intervals; plug 4-68-143 seals the fitting when not in service. Both should be present and serviceable -- a dry spline bore wears rapidly under the side-loading that occurs as the driveshaft angles change during chassis movement.

• Part Number: 4-3-1431KX
• Brand: UDS
• Series: 1550
• Spline Bore: 1.750" diameter x 16 splines
• CJ to End: 10.062"
• Lube Fitting: 500168-2
• Plug: 4-68-143

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