Width: U joint: Please compress the caps and measure from outside of cap to outside of cap .

End Yoke: Please measure from inside of tab to inside of tab, using the picture above for reference, If you do not see a tab as shown, then you have an inside snap ring u joint.

Use the picture above for reference

Cap Diameter:
U joint: Simply measure the U-Joint cap diameter .
End Yoke: Please measure the width of the opening where the cap sits in the yoke. use the picture above for reference

Use the picture above for reference

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Flange Yoke Form

Common Outside Snap Ring U-joint Sizes and Series

Series Width Cap Diameter
1210
2 7/16″ = 2.438
1 1/16″ = 1.063
1310
3 7/32″ = 3.219
1 1/16″ = 1.063
1310 FORD*
3 7/32″ = 3.219
1 1/8″ = 1.125
1330
3 5/8″ = 3.625
1 1/16″ = 1.063
1330 FORD*
3 5/8″ = 3.625
1 1/8″ = 1.125
1350
3 5/8″ = 3.625
1 3/16″ = 1.188
1410
4 3/16 = 4.188
1 3/16″ = 1.188
1415**
4.178
1 3/16″ = 1.188
1480
4 3/16 = 4.188
1 3/8″ = 1.375
1485**
4.178
1 3/8″ = 1.375
1550
4 31/32″ = 4.969
1 3/8″ = 1.375
1555**
4.9464
1 3/8″ = 1.375

U-Joints Catalog:

3R-3-9170KX Slip Yoke 3R series, Splines: 1.375×16 Center Joint To End 7.375

In stock

$31.25
SKU: 3R-3-9170KX
Weight 5 lbs
Dimensions 6 × 4 × 3 in
Series

3R

C l to end

7.375

Notes

UDS

Splines count

16

Splines dia

1.375

Partn number

3R-3-9170KX

2-70-48X

In stock

$8.96
SKU: 2-70-48X
Weight 0.7 lbs
Dimensions 25 × 18 × 10 in
Bolt length

1.5

Bolt torque

32 ft-lb

Center to center

1.8

Fits cap dia

1.125

Partn number

2-70-48X

Thread dia

.312-24

Series

3R

1-2025

In stock

$8.96
SKU: 1-2025
Weight 0.7 lbs
Dimensions 25 × 18 × 10 in
Bolt length

1.5

Bolt torque

32 ft-lb

Center to center

1.812

Fits cap dia

1.125

Partn number

1-2025

Thread dia

.312-24

Series

3R

3R25-20

In stock

$0.00
SKU: 3R25-20
Weight 0.7 lbs
Dimensions 25 × 18 × 10 in
Ball dia

908

Notes

Commonly used on all 3R shafts!!!!

Partn number

3R25-20

Seal height

197

Seal o d

1.24

Series

3R

Stud bore dia

0.5

2-9302

In stock

$0.00
SKU: 2-9302
Weight 0.7 lbs
Dimensions 25 × 18 × 10 in
Ball dia

0.91

Notes

3 Race, 2 Springs, 2 Shims, 1 Seal, 1 Ball

Partn number

2-9302

Seal height

0.17

Seal o d

1.24

Series

3R

Stud bore dia

0.46

2-9301

In stock

$0.00
SKU: 2-9301
Weight 0.7 lbs
Dimensions 25 × 18 × 10 in
Ball dia

0.91

Notes

3 Race, 2 Springs, 2 Shims, 1 Seal, 1 Ball

Partn number

2-9301

Seal height

197

Seal o d

1.24

Series

3R

Stud bore dia

625