A splined bore end yoke slides onto the splined output of a transmission, transfer case or differential and is retained by a nut. This is the common arrangement across most drivelines.

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N3-4-JK08 end yoke
$111.55
Max:
Min: 1
Step: 1
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N3-4-JK08
1350
3.100"
1.85
24
1.250"
UB
1.500"
FITS JEEP WRANGLER JK DANA 30 AND DANA 44 FRONT END
N2-4-JK06 end yoke
$115.63
Max:
Min: 1
Step: 1
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N2-4-JK06
1310
3.000"
1.85
24
1.25
UB
1.5
JEEP JK - FRON PINION
90-4-591-1X end yoke
$203.03
Max:
Min: 1
Step: 1
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90-4-591-1X
SPL90
4.375"
3.000"
32
2.114
BS
2.250"
90-4-311-1 end yoke
$86.69
Max:
Min: 1
Step: 1
Add to Cart
90-4-311-1
SPL90
4.625
3.000"
39
2.024
BS
2.312
90-4-11-1 end yoke
$207.20
Max:
Min: 1
Step: 1
Add to Cart
90-4-11-1
SPL90
4.062
2.190"
34
1.790"
BS
2.250"
6.5-4-4631-1 end yoke
$217.13
Max:
Min: 1
Step: 1
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6.5-4-4631-1
1810
5.652
0.000"
54
2.794
HR
2.750"
6.5-4-4631 end yoke
$261.34
Max:
Min: 1
Step: 1
Add to Cart
6.5-4-4631
1810
5.652
0.000"
54
2.794
BP
2.750"
HUB DIAMETER NOT GROUND
6.5-4-3591-1 end yoke
$145.79
Max:
Min: 1
Step: 1
Add to Cart
6.5-4-3591-1
1810
5.500"
2.875
46
2.390"
HR
2.750"
HUB DIAMETER NOT GROUND
6.5-4-1891-1 end yoke
$164.92
Max:
Min: 1
Step: 1
Add to Cart
6.5-4-1891-1
1810
5.500"
2.875
16
2.350"
HR
2.750"
COUPLING SHAFT YOKE
6.5-4-1891 end yoke
$116.26
Max:
Min: 1
Step: 1
Add to Cart
6.5-4-1891
1810
5.500"
2.875
16
2.350"
BP
2.750"
COUPLING SHAFT YOKE
6.3-4-821-1 end yoke
$113.36
Max:
Min: 1
Step: 1
Add to Cart
6.3-4-821-1
1760
5.500"
2.875
46
2.39
HR
2.750"
COUPLING SHAFT YOKE
6.3-4-5221-1X end yoke
$114.01
Max:
Min: 1
Step: 1
Add to Cart
6.3-4-5221-1X
1760
5.250"
3.000"
44
2.274
HR
2.500"
6.3-4-1681-1 end yoke
$222.43
Max:
Min: 1
Step: 1
Add to Cart
6.3-4-1681-1
1760
5.625
0.000"
54
2.794
HR
2.750"
HUB DIAMETER NOT GROUND
6.3-4-161-1 end yoke
$127.30
Max:
Min: 1
Step: 1
Add to Cart
6.3-4-161-1
1760
5.500"
2.875
16
2.350"
HR
2.750"
6.3-4-161 end yoke
$128.66
Max:
Min: 1
Step: 1
Add to Cart
6.3-4-161
1760
5.500"
2.875
16
2.350"
BP
2.750"
6-4-7481-1 end yoke
$108.34
Max:
Min: 1
Step: 1
Add to Cart
6-4-7481-1
1710
4.938
2.875
46
2.390"
HR
2.750"
6-4-7181X end yoke
$376.40
Max:
Min: 1
Step: 1
Add to Cart
6-4-7181X
1710
5.391
3.250"
46
2.390"
BP
2.328
6-4-7141-1 end yoke
$129.32
Max:
Min: 1
Step: 1
Add to Cart
6-4-7141-1
1710
5.000"
2.810"
38
1.998
HR
3.000"
COUPLING SHAFT YOKE
6-4-4601-1 end yoke
$147.92
Max:
Min: 1
Step: 1
Add to Cart
6-4-4601-1
1710
4.938
3.312
16
2.35
HR
2.750"
6-4-4601 end yoke
$127.51
Max:
Min: 1
Step: 1
Add to Cart
6-4-4601
1710
4.938
3.312
16
2.350"
BP
2.750"

Two figures decide fitment: count the splines on your output shaft and measure across the spline tips. A 27-spline 1.188 shaft and a 31-spline 1.375 shaft are not interchangeable.

Splined bore yokes transmit torque through the spline flanks rather than through a key or a clamp, which spreads the load around the whole circumference. The yoke seats against a shoulder on the shaft and is held by an end nut, so the spline fit governs both concentricity and how the yoke will run once torqued down.

Series determines which u-joint the ears accept; spline count and spline diameter determine which shaft it goes onto. Both are published on every part page, and both have to match.