Part No. 4-3-1431KX Slip Yoke 1550 Series, Splines: 1.750x16, Centerline To End: 10.062
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Specifications 4-3-1431KX · 1550 Series Slip Yoke
- Part number
- 4-3-1431KX
- Part type
- Slip Yoke
- Condition
- New
- Brand
- UDS
- Series
- 1550
- Splines count
- 16
- Splines diameter
- 1.750"
- Center u-joint to end
- 10.062
- Weight
- 9.36 lb
Fitment
Slip yoke plug 4-68-143, Lube fitting 500168-2
1550 series parts use 1.375" u-joint bearing caps on a 4.875" snap-ring-to-snap-ring width (nominal). Confirm the cap diameter on the mating yoke or joint before ordering.
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About 4-3-1431KX
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
Browse Slip Yokes across 1310, 1350, 1410, 1480, 1550, and heavy-duty series.
Not sure which slip yoke you need? Our transmission slip yoke guide covers spline counts, styles, and how to measure.
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4-3-1431KX questions
What series is 4-3-1431KX?
4-3-1431KX is a 1550 series slip yoke. Nominal 1550 dimensions are 1.375" bearing caps on a 4.875" snap-ring-to-snap-ring width. Measure the cap diameter on your old joint to confirm the series before ordering.
What spline count does 4-3-1431KX have?
4-3-1431KX has 16 splines on a 1.750" spline diameter. Count the splines on the output shaft and measure across the major diameter to confirm.
Is 4-3-1431KX in stock?
Yes. 16 are in stock in Florida. Most stock orders placed before 2 pm EST on a weekday ship the same day.