OX U-Joint for Dana 30, Dana 44, GM 10 Bolt (equivalent to Dana 5-297X and 5-760X)
The Ox uses a multi-piece design, with a center body made of an 8620 alloy that has had some special and proprietary heat treatment. Instead of caps, the OX has pins that insert through the axle yoke ear into the body and are retained inside a cavity in the body by a pair of 4340 alloy retainers. The pins are also 8620, but they get a different heat treatment than the body. The pins use an o-ring seal to keep water out.
The manufacturer has done destructive testing and found the unit can handle up to 22,000 lbs-ft. The new 760x cold forged Spicer is good for about 5,400 lbs-ft. The old 297s joint was good for about 4,600 lbs-ft. OX claims their U-joint is nearly twice as strong as the next strongest super U-joint in the same sort of destructive tests. The OX is so sturdy that it actually helps hold the axle yokes together longer under a heavy strain as well.
As to applications, OX currently offers units that will replace the 297/760 Spicer sizes, which covers Dana 44s, GM 10-bolts, some Dana 30s and Dana 35 IFS, among a few others. A 332x size, to suit the Dana 60 front, is also available..
Ox recommends this U-joint to be used only with heavy-duty axles with full clip capability. If your axles are not of the type OX recommends, the U-joint
may not fit. They suggest you check for clearance before installing on your vehicle and Do not use this U-joint with stock axles. Grease U-joints periodically according to usage. We recommend Amsoil Racing Grease."
8620 alloy Multi Piece DesignApproximately 4 times stronger than a Forged Spicer 760x8.5 10 Bolt96 & Newer Dana 30All D44 axles