Inside snap ring joints carry their rings inboard of the yoke ear, between the bearing cap and the cross. The rings are hidden from outside, which is the quickest way to tell the style apart on a shaft you already have.

37Parts
37In stock
Sort by Name Z - A
Series
Style
1
Brand
Filters Sort results
Reset Apply
Image
Add to Cart
Part #
Series
Style
Cap Dia 1
Cap Dia 2
Width 1
Width 2
Lube
Type
Brand
Notes
5-3147x
$10.64
Max:
Min: 1
Step: 1
Add to Cart
3 R
ISR
1.125
2.556
Y
UDS
Lube fitting in cross
5-297x
$10.70
Max:
Min: 1
Step: 1
Add to Cart
1310WJ
ISR
1.188
2.188
Yes
UDS
DANA 30 - DANA 35 , DANA 44 FRONT AXLE SHAFT BETWEEN FORD MPAR AND GM
5-2011x
$11.05
Max: 189
Min: 1
Step: 1
Add to Cart
2R
ISR
1.000
2.344
Y
UDS
5-1520x
$13.21
Max: 195
Min: 1
Step: 1
Add to Cart
2.5RL
ISR
1.125
2.125
No
UDS
Toyota APP - U joint mostly used on a cv head driveshaft
5-1515x
$11.66
Max: 28
Min: 1
Step: 1
Add to Cart
FOREIGN
ISR
1.142
2.080
Yes
UDS
MULTIPLE : ACURA, CHEVROLET, HONDA, ISUZU
5-1511
$16.10
Max:
Min: 1
Step: 1
Add to Cart
TOYOTA
ISR
1.260"
2.520"
Y
UDS
TOYOTA APPLICATION - FITS 1351-21 COMP SER'
5-1510x
$11.64
Max:
Min: 1
Step: 1
Add to Cart
1510
ISR
1.142
2.047
Yes
UDS
Heavy Duty Toyota U Joint
5-1508x
$12.11
Max: 50
Min: 1
Step: 1
Add to Cart
FOREIGN
ISR
1.025
2.200
Yes
UDS
Toyota U-Joint found in older pickup truck
5-1505x
$12.88
Max:
Min: 1
Step: 1
Add to Cart
ISR
1.102
2.208
Y
UDS
Nissan Infinity Subaru Alternative part number: 1-0029 2200029 , 25-1505X
5-1501x
$8.84
Max:
Min: 1
Step: 1
Add to Cart
1251
ISR
0.984
1.734
N
UDS
FOREIGN
⋅
Nissan/Subaru
5-788x
$9.71
Max:
Min: 1
Step: 1
Add to Cart
7260
ISR
1.078
2.125
Yes
UDS
5-105x
$13.89
Max:
Min: 1
Step: 1
Add to Cart
1110
ISR
1.000
1.718
No
UDS
5-103x
$12.37
Max:
Min: 1
Step: 1
Add to Cart
1000
ISR
0.938
1.500
Y
UDS
Lube fitting in body
⋅
Mostly used on a steering shaft
Placeholder
$26.90
Max: 4
Min: 1
Step: 1
Add to Cart
KIA
ISR
1.102
2.032
Y
UDS
KIA SORRENTO
9951-23
$14.35
Max: 58
Min: 1
Step: 1
Add to Cart
FOREIGN
ISR
1.181
2.290
Yes
UDS
This joint fits some Mitsubishi Montero's.
gun46
$34.87
Max: 48
Min: 1
Step: 1
Add to Cart
Kia/Mazda
ISR
1.043
1.988
Y
UDS
Kia Sportage Front Shaft (2003-2006 models), Kia Sorento AWD Rear Shaft (2007-2010 models), and Mazda RX3 & Cosmo components are available.
1-1510
$19.13
Max:
Min: 1
Step: 1
Add to Cart
TOYOTA
ISR
1.142
2.047
N
UDS
TOYOTA APPLICATION
12

If you cannot see rings on the outer faces of the ears, you are almost certainly looking at an inside snap ring joint. Confirm cap diameter and width before ordering.

Inside snap ring construction puts the groove on the inboard side of the yoke ear. The ring goes in behind the bearing cap, so from outside the yoke you see only the cap face. The arrangement keeps the retention out of the way of driveshaft tube clearance, which is why it appears on many factory shafts where packaging is tight.

Servicing takes slightly more work than an outside ring because the rings have to be reached from inside the yoke, but the joint is otherwise equivalent in load capacity to an outside ring joint of the same series.